Finding the Fourth Proportional to 10,388.26, 14,336.82 and 6,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.26 : 14,336.82 = 6,140.72 : x
2. Step 2: Convert to fraction form
   10,388.26/14,336.82 = 6,140.72/x
3. Step 3: Cross multiply
   10,388.26x = 14,336.82 × 6,140.72
4. Step 4: Simplify right side
   10,388.26x = 88,038,397.31
5. Step 5: Solve for x
   x = 88,038,397.31/10,388.26
6. Step 6: Final answer
   x = 8,474.80