Finding the Fourth Proportional to 9,978.80, 14,947.13 and 6,017.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.80 : 14,947.13 = 6,017.69 : x
2. Step 2: Convert to fraction form
   9,978.80/14,947.13 = 6,017.69/x
3. Step 3: Cross multiply
   9,978.80x = 14,947.13 × 6,017.69
4. Step 4: Simplify right side
   9,978.80x = 89,947,247.14
5. Step 5: Solve for x
   x = 89,947,247.14/9,978.80
6. Step 6: Final answer
   x = 9,013.84