Finding the Fourth Proportional to 13,240.50, 18,275.31 and 7,654.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,240.50 : 18,275.31 = 7,654.74 : x
2. Step 2: Convert to fraction form
   13,240.50/18,275.31 = 7,654.74/x
3. Step 3: Cross multiply
   13,240.50x = 18,275.31 × 7,654.74
4. Step 4: Simplify right side
   13,240.50x = 139,892,746.47
5. Step 5: Solve for x
   x = 139,892,746.47/13,240.50
6. Step 6: Final answer
   x = 10,565.52