Finding the Fourth Proportional to 10,390.88, 14,339.76 and 5,675.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.88 : 14,339.76 = 5,675.60 : x
2. Step 2: Convert to fraction form
   10,390.88/14,339.76 = 5,675.60/x
3. Step 3: Cross multiply
   10,390.88x = 14,339.76 × 5,675.60
4. Step 4: Simplify right side
   10,390.88x = 81,386,741.86
5. Step 5: Solve for x
   x = 81,386,741.86/10,390.88
6. Step 6: Final answer
   x = 7,832.52