Finding the Fourth Proportional to 10,532.06, 15,790.28 and 4,978.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,532.06 : 15,790.28 = 4,978.91 : x
2. Step 2: Convert to fraction form
   10,532.06/15,790.28 = 4,978.91/x
3. Step 3: Cross multiply
   10,532.06x = 15,790.28 × 4,978.91
4. Step 4: Simplify right side
   10,532.06x = 78,618,397.58
5. Step 5: Solve for x
   x = 78,618,397.58/10,532.06
6. Step 6: Final answer
   x = 7,464.68