Finding the Fourth Proportional to 10,396.52, 14,338.32 and 8,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,396.52 : 14,338.32 = 8,128.52 : x
2. Step 2: Convert to fraction form
   10,396.52/14,338.32 = 8,128.52/x
3. Step 3: Cross multiply
   10,396.52x = 14,338.32 × 8,128.52
4. Step 4: Simplify right side
   10,396.52x = 116,549,320.89
5. Step 5: Solve for x
   x = 116,549,320.89/10,396.52
6. Step 6: Final answer
   x = 11,210.42