Finding the Fourth Proportional to 10,505.32, 14,498.18 and 5,790.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505.32 : 14,498.18 = 5,790.40 : x
2. Step 2: Convert to fraction form
   10,505.32/14,498.18 = 5,790.40/x
3. Step 3: Cross multiply
   10,505.32x = 14,498.18 × 5,790.40
4. Step 4: Simplify right side
   10,505.32x = 83,950,261.47
5. Step 5: Solve for x
   x = 83,950,261.47/10,505.32
6. Step 6: Final answer
   x = 7,991.21