Finding the Fourth Proportional to 13,146.50, 18,142.17 and 7,560.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,146.50 : 18,142.17 = 7,560.74 : x
2. Step 2: Convert to fraction form
   13,146.50/18,142.17 = 7,560.74/x
3. Step 3: Cross multiply
   13,146.50x = 18,142.17 × 7,560.74
4. Step 4: Simplify right side
   13,146.50x = 137,168,230.41
5. Step 5: Solve for x
   x = 137,168,230.41/13,146.50
6. Step 6: Final answer
   x = 10,433.82