Finding the Fourth Proportional to 12,781.32, 19,171.50 and 4,461.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,781.32 : 19,171.50 = 4,461.32 : x
2. Step 2: Convert to fraction form
   12,781.32/19,171.50 = 4,461.32/x
3. Step 3: Cross multiply
   12,781.32x = 19,171.50 × 4,461.32
4. Step 4: Simplify right side
   12,781.32x = 85,530,196.38
5. Step 5: Solve for x
   x = 85,530,196.38/12,781.32
6. Step 6: Final answer
   x = 6,691.81