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Finding the Fourth Proportional to 28,299.58, 42,449.47 and 9,579.77

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Solution

The fourth proportional to 28,299.58, 42,449.47 and 9,579.77 is: 14,369.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.58 : 42,449.47 = 9,579.77 : x
  2. Step 2: Convert to fraction form
    28,299.58/42,449.47 = 9,579.77/x
  3. Step 3: Cross multiply
    28,299.58x = 42,449.47 × 9,579.77
  4. Step 4: Simplify right side
    28,299.58x = 406,656,082.21
  5. Step 5: Solve for x
    x = 406,656,082.21/28,299.58
  6. Step 6: Final answer
    x = 14,369.69

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