Finding the Fourth Proportional to 12,870.52, 17,761.66 and 7,205.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870.52 : 17,761.66 = 7,205.24 : x
2. Step 2: Convert to fraction form
   12,870.52/17,761.66 = 7,205.24/x
3. Step 3: Cross multiply
   12,870.52x = 17,761.66 × 7,205.24
4. Step 4: Simplify right side
   12,870.52x = 127,977,023.10
5. Step 5: Solve for x
   x = 127,977,023.10/12,870.52
6. Step 6: Final answer
   x = 9,943.42