Finding the Fourth Proportional to 13,114.71, 18,094.39 and 8,399.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,114.71 : 18,094.39 = 8,399.30 : x
2. Step 2: Convert to fraction form
   13,114.71/18,094.39 = 8,399.30/x
3. Step 3: Cross multiply
   13,114.71x = 18,094.39 × 8,399.30
4. Step 4: Simplify right side
   13,114.71x = 151,980,098.46
5. Step 5: Solve for x
   x = 151,980,098.46/13,114.71
6. Step 6: Final answer
   x = 11,588.52