Finding the Fourth Proportional to 10,131.28, 13,978.58 and 6,152.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.28 : 13,978.58 = 6,152.46 : x
2. Step 2: Convert to fraction form
   10,131.28/13,978.58 = 6,152.46/x
3. Step 3: Cross multiply
   10,131.28x = 13,978.58 × 6,152.46
4. Step 4: Simplify right side
   10,131.28x = 86,002,571.12
5. Step 5: Solve for x
   x = 86,002,571.12/10,131.28
6. Step 6: Final answer
   x = 8,488.82