Finding the Fourth Proportional to 9,978.26, 13,770.61 and 5,501.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.26 : 13,770.61 = 5,501.99 : x
2. Step 2: Convert to fraction form
   9,978.26/13,770.61 = 5,501.99/x
3. Step 3: Cross multiply
   9,978.26x = 13,770.61 × 5,501.99
4. Step 4: Simplify right side
   9,978.26x = 75,765,731.00
5. Step 5: Solve for x
   x = 75,765,731.00/9,978.26
6. Step 6: Final answer
   x = 7,593.08