Finding the Fourth Proportional to 10,436.72, 14,402.67 and 5,720.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.72 : 14,402.67 = 5,720.99 : x
2. Step 2: Convert to fraction form
   10,436.72/14,402.67 = 5,720.99/x
3. Step 3: Cross multiply
   10,436.72x = 14,402.67 × 5,720.99
4. Step 4: Simplify right side
   10,436.72x = 82,397,531.04
5. Step 5: Solve for x
   x = 82,397,531.04/10,436.72
6. Step 6: Final answer
   x = 7,894.96