Finding the Fourth Proportional to 12,781.59, 17,635.89 and 7,475.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,781.59 : 17,635.89 = 7,475.34 : x
2. Step 2: Convert to fraction form
   12,781.59/17,635.89 = 7,475.34/x
3. Step 3: Cross multiply
   12,781.59x = 17,635.89 × 7,475.34
4. Step 4: Simplify right side
   12,781.59x = 131,834,273.95
5. Step 5: Solve for x
   x = 131,834,273.95/12,781.59
6. Step 6: Final answer
   x = 10,314.39