Finding the Fourth Proportional to 10,492.75, 14,479.68 and 5,712.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,492.75 : 14,479.68 = 5,712.78 : x
2. Step 2: Convert to fraction form
   10,492.75/14,479.68 = 5,712.78/x
3. Step 3: Cross multiply
   10,492.75x = 14,479.68 × 5,712.78
4. Step 4: Simplify right side
   10,492.75x = 82,719,302.03
5. Step 5: Solve for x
   x = 82,719,302.03/10,492.75
6. Step 6: Final answer
   x = 7,883.48