Finding the Fourth Proportional to 11,978.88, 16,531.03 and 6,875.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.88 : 16,531.03 = 6,875.23 : x
2. Step 2: Convert to fraction form
   11,978.88/16,531.03 = 6,875.23/x
3. Step 3: Cross multiply
   11,978.88x = 16,531.03 × 6,875.23
4. Step 4: Simplify right side
   11,978.88x = 113,654,633.39
5. Step 5: Solve for x
   x = 113,654,633.39/11,978.88
6. Step 6: Final answer
   x = 9,487.92