Finding the Fourth Proportional to 12,841.86, 17,720.91 and 7,252.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,841.86 : 17,720.91 = 7,252.50 : x
2. Step 2: Convert to fraction form
   12,841.86/17,720.91 = 7,252.50/x
3. Step 3: Cross multiply
   12,841.86x = 17,720.91 × 7,252.50
4. Step 4: Simplify right side
   12,841.86x = 128,520,899.78
5. Step 5: Solve for x
   x = 128,520,899.78/12,841.86
6. Step 6: Final answer
   x = 10,007.97