Finding the Fourth Proportional to 13,384.02, 18,469.90 and 7,415.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,384.02 : 18,469.90 = 7,415.69 : x
2. Step 2: Convert to fraction form
   13,384.02/18,469.90 = 7,415.69/x
3. Step 3: Cross multiply
   13,384.02x = 18,469.90 × 7,415.69
4. Step 4: Simplify right side
   13,384.02x = 136,966,948.79
5. Step 5: Solve for x
   x = 136,966,948.79/13,384.02
6. Step 6: Final answer
   x = 10,233.62