Finding the Fourth Proportional to 10,929.23, 15,081.89 and 6,454.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,929.23 : 15,081.89 = 6,454.42 : x
2. Step 2: Convert to fraction form
   10,929.23/15,081.89 = 6,454.42/x
3. Step 3: Cross multiply
   10,929.23x = 15,081.89 × 6,454.42
4. Step 4: Simplify right side
   10,929.23x = 97,344,830.89
5. Step 5: Solve for x
   x = 97,344,830.89/10,929.23
6. Step 6: Final answer
   x = 8,906.84