Finding the Fourth Proportional to 12,658.30, 17,466.15 and 10,887.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,658.30 : 17,466.15 = 10,887.10 : x
2. Step 2: Convert to fraction form
   12,658.30/17,466.15 = 10,887.10/x
3. Step 3: Cross multiply
   12,658.30x = 17,466.15 × 10,887.10
4. Step 4: Simplify right side
   12,658.30x = 190,155,721.67
5. Step 5: Solve for x
   x = 190,155,721.67/12,658.30
6. Step 6: Final answer
   x = 15,022.22