Finding the Fourth Proportional to 10,551.93, 15,830.24 and 3,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,551.93 : 15,830.24 = 3,978.18 : x
2. Step 2: Convert to fraction form
   10,551.93/15,830.24 = 3,978.18/x
3. Step 3: Cross multiply
   10,551.93x = 15,830.24 × 3,978.18
4. Step 4: Simplify right side
   10,551.93x = 62,975,524.27
5. Step 5: Solve for x
   x = 62,975,524.27/10,551.93
6. Step 6: Final answer
   x = 5,968.15