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Finding the Fourth Proportional to 7,867.76, 11,804.52 and 5,678.96

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Solution

The fourth proportional to 7,867.76, 11,804.52 and 5,678.96 is: 8,520.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.76 : 11,804.52 = 5,678.96 : x
  2. Step 2: Convert to fraction form
    7,867.76/11,804.52 = 5,678.96/x
  3. Step 3: Cross multiply
    7,867.76x = 11,804.52 × 5,678.96
  4. Step 4: Simplify right side
    7,867.76x = 67,037,396.90
  5. Step 5: Solve for x
    x = 67,037,396.90/7,867.76
  6. Step 6: Final answer
    x = 8,520.52

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