Finding the Fourth Proportional to 10,454.28, 14,427.18 and 5,978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,454.28 : 14,427.18 = 5,978.76 : x
2. Step 2: Convert to fraction form
   10,454.28/14,427.18 = 5,978.76/x
3. Step 3: Cross multiply
   10,454.28x = 14,427.18 × 5,978.76
4. Step 4: Simplify right side
   10,454.28x = 86,256,646.70
5. Step 5: Solve for x
   x = 86,256,646.70/10,454.28
6. Step 6: Final answer
   x = 8,250.85