Finding the Fourth Proportional to 10,635.89, 14,679.16 and 6,389.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,635.89 : 14,679.16 = 6,389.31 : x
2. Step 2: Convert to fraction form
   10,635.89/14,679.16 = 6,389.31/x
3. Step 3: Cross multiply
   10,635.89x = 14,679.16 × 6,389.31
4. Step 4: Simplify right side
   10,635.89x = 93,789,703.78
5. Step 5: Solve for x
   x = 93,789,703.78/10,635.89
6. Step 6: Final answer
   x = 8,818.23