Finding the Fourth Proportional to 13,327.71, 18,393.32 and 7,664.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,327.71 : 18,393.32 = 7,664.29 : x
2. Step 2: Convert to fraction form
   13,327.71/18,393.32 = 7,664.29/x
3. Step 3: Cross multiply
   13,327.71x = 18,393.32 × 7,664.29
4. Step 4: Simplify right side
   13,327.71x = 140,971,711.72
5. Step 5: Solve for x
   x = 140,971,711.72/13,327.71
6. Step 6: Final answer
   x = 10,577.34