Finding the Fourth Proportional to 10,552.18, 15,830.61 and 3,978.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,552.18 : 15,830.61 = 3,978.43 : x
2. Step 2: Convert to fraction form
   10,552.18/15,830.61 = 3,978.43/x
3. Step 3: Cross multiply
   10,552.18x = 15,830.61 × 3,978.43
4. Step 4: Simplify right side
   10,552.18x = 62,980,894.59
5. Step 5: Solve for x
   x = 62,980,894.59/10,552.18
6. Step 6: Final answer
   x = 5,968.52