Finding the Fourth Proportional to 10,339.10, 14,256.56 and 7,146.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,339.10 : 14,256.56 = 7,146.86 : x
2. Step 2: Convert to fraction form
   10,339.10/14,256.56 = 7,146.86/x
3. Step 3: Cross multiply
   10,339.10x = 14,256.56 × 7,146.86
4. Step 4: Simplify right side
   10,339.10x = 101,889,584.99
5. Step 5: Solve for x
   x = 101,889,584.99/10,339.10
6. Step 6: Final answer
   x = 9,854.78