Finding the Fourth Proportional to 10,331.52, 14,261.86 and 6,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,331.52 : 14,261.86 = 6,978.88 : x
2. Step 2: Convert to fraction form
   10,331.52/14,261.86 = 6,978.88/x
3. Step 3: Cross multiply
   10,331.52x = 14,261.86 × 6,978.88
4. Step 4: Simplify right side
   10,331.52x = 99,531,809.52
5. Step 5: Solve for x
   x = 99,531,809.52/10,331.52
6. Step 6: Final answer
   x = 9,633.80