Finding the Fourth Proportional to 9,826.18, 13,560.28 and 5,577.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,826.18 : 13,560.28 = 5,577.12 : x
2. Step 2: Convert to fraction form
   9,826.18/13,560.28 = 5,577.12/x
3. Step 3: Cross multiply
   9,826.18x = 13,560.28 × 5,577.12
4. Step 4: Simplify right side
   9,826.18x = 75,627,294.85
5. Step 5: Solve for x
   x = 75,627,294.85/9,826.18
6. Step 6: Final answer
   x = 7,696.51