Finding the Fourth Proportional to 13,280.02, 18,327.50 and 7,615.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,280.02 : 18,327.50 = 7,615.29 : x
2. Step 2: Convert to fraction form
   13,280.02/18,327.50 = 7,615.29/x
3. Step 3: Cross multiply
   13,280.02x = 18,327.50 × 7,615.29
4. Step 4: Simplify right side
   13,280.02x = 139,569,286.68
5. Step 5: Solve for x
   x = 139,569,286.68/13,280.02
6. Step 6: Final answer
   x = 10,509.72