Finding the Fourth Proportional to 9,978.52, 13,770.12 and 5,502.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.52 : 13,770.12 = 5,502.26 : x
2. Step 2: Convert to fraction form
   9,978.52/13,770.12 = 5,502.26/x
3. Step 3: Cross multiply
   9,978.52x = 13,770.12 × 5,502.26
4. Step 4: Simplify right side
   9,978.52x = 75,766,780.47
5. Step 5: Solve for x
   x = 75,766,780.47/9,978.52
6. Step 6: Final answer
   x = 7,592.99