Finding the Fourth Proportional to 9,830.88, 13,566.54 and 5,354.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,830.88 : 13,566.54 = 5,354.61 : x
2. Step 2: Convert to fraction form
   9,830.88/13,566.54 = 5,354.61/x
3. Step 3: Cross multiply
   9,830.88x = 13,566.54 × 5,354.61
4. Step 4: Simplify right side
   9,830.88x = 72,643,503.98
5. Step 5: Solve for x
   x = 72,643,503.98/9,830.88
6. Step 6: Final answer
   x = 7,389.32