Finding the Fourth Proportional to 13,382.78, 18,469.23 and 7,415.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,382.78 : 18,469.23 = 7,415.00 : x
2. Step 2: Convert to fraction form
   13,382.78/18,469.23 = 7,415.00/x
3. Step 3: Cross multiply
   13,382.78x = 18,469.23 × 7,415.00
4. Step 4: Simplify right side
   13,382.78x = 136,949,248.10
5. Step 5: Solve for x
   x = 136,949,248.10/13,382.78
6. Step 6: Final answer
   x = 10,233.25