Finding the Fourth Proportional to 13,384.83, 18,469.57 and 7,415.02

Step by Step Solution

1. Step 1: Write the proportion equation
   13,384.83 : 18,469.57 = 7,415.02 : x
2. Step 2: Convert to fraction form
   13,384.83/18,469.57 = 7,415.02/x
3. Step 3: Cross multiply
   13,384.83x = 18,469.57 × 7,415.02
4. Step 4: Simplify right side
   13,384.83x = 136,952,230.94
5. Step 5: Solve for x
   x = 136,952,230.94/13,384.83
6. Step 6: Final answer
   x = 10,231.90