Finding the Fourth Proportional to 13,080.41, 18,050.61 and 7,415

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.41 : 18,050.61 = 7,415 : x
2. Step 2: Convert to fraction form
   13,080.41/18,050.61 = 7,415/x
3. Step 3: Cross multiply
   13,080.41x = 18,050.61 × 7,415
4. Step 4: Simplify right side
   13,080.41x = 133,845,273.15
5. Step 5: Solve for x
   x = 133,845,273.15/13,080.41
6. Step 6: Final answer
   x = 10,232.50