Finding the Fourth Proportional to 13,200.62, 18,214.54 and 7,532.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.62 : 18,214.54 = 7,532.78 : x
2. Step 2: Convert to fraction form
   13,200.62/18,214.54 = 7,532.78/x
3. Step 3: Cross multiply
   13,200.62x = 18,214.54 × 7,532.78
4. Step 4: Simplify right side
   13,200.62x = 137,206,012.72
5. Step 5: Solve for x
   x = 137,206,012.72/13,200.62
6. Step 6: Final answer
   x = 10,393.91