Finding the Fourth Proportional to 13,061.47, 18,025.19 and 7,684.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.47 : 18,025.19 = 7,684.29 : x
2. Step 2: Convert to fraction form
   13,061.47/18,025.19 = 7,684.29/x
3. Step 3: Cross multiply
   13,061.47x = 18,025.19 × 7,684.29
4. Step 4: Simplify right side
   13,061.47x = 138,510,700.46
5. Step 5: Solve for x
   x = 138,510,700.46/13,061.47
6. Step 6: Final answer
   x = 10,604.53