Finding the Fourth Proportional to 9,830.89, 13,566.51 and 5,354.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,830.89 : 13,566.51 = 5,354.63 : x
2. Step 2: Convert to fraction form
   9,830.89/13,566.51 = 5,354.63/x
3. Step 3: Cross multiply
   9,830.89x = 13,566.51 × 5,354.63
4. Step 4: Simplify right side
   9,830.89x = 72,643,573.61
5. Step 5: Solve for x
   x = 72,643,573.61/9,830.89
6. Step 6: Final answer
   x = 7,389.32