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Finding the Fourth Proportional to 12,647.05, 18,971.49 and 4,855.86

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Solution

The fourth proportional to 12,647.05, 18,971.49 and 4,855.86 is: 7,284.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.05 : 18,971.49 = 4,855.86 : x
  2. Step 2: Convert to fraction form
    12,647.05/18,971.49 = 4,855.86/x
  3. Step 3: Cross multiply
    12,647.05x = 18,971.49 × 4,855.86
  4. Step 4: Simplify right side
    12,647.05x = 92,122,899.43
  5. Step 5: Solve for x
    x = 92,122,899.43/12,647.05
  6. Step 6: Final answer
    x = 7,284.14

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