Finding the Fourth Proportional to 20,552.32, 30,830.56 and 5,761.28

Step by Step Solution

1. Step 1: Write the proportion equation
   20,552.32 : 30,830.56 = 5,761.28 : x
2. Step 2: Convert to fraction form
   20,552.32/30,830.56 = 5,761.28/x
3. Step 3: Cross multiply
   20,552.32x = 30,830.56 × 5,761.28
4. Step 4: Simplify right side
   20,552.32x = 177,623,488.72
5. Step 5: Solve for x
   x = 177,623,488.72/20,552.32
6. Step 6: Final answer
   x = 8,642.50