Finding the Fourth Proportional to 12,490.59, 17,219.13 and 7,707.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.59 : 17,219.13 = 7,707.33 : x
2. Step 2: Convert to fraction form
   12,490.59/17,219.13 = 7,707.33/x
3. Step 3: Cross multiply
   12,490.59x = 17,219.13 × 7,707.33
4. Step 4: Simplify right side
   12,490.59x = 132,713,517.22
5. Step 5: Solve for x
   x = 132,713,517.22/12,490.59
6. Step 6: Final answer
   x = 10,625.08