Finding the Fourth Proportional to 9,679.29, 13,356.94 and 5,429.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.29 : 13,356.94 = 5,429.82 : x
2. Step 2: Convert to fraction form
   9,679.29/13,356.94 = 5,429.82/x
3. Step 3: Cross multiply
   9,679.29x = 13,356.94 × 5,429.82
4. Step 4: Simplify right side
   9,679.29x = 72,525,779.95
5. Step 5: Solve for x
   x = 72,525,779.95/9,679.29
6. Step 6: Final answer
   x = 7,492.88