Finding the Fourth Proportional to 10,436.42, 14,402.62 and 5,720.66

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.42 : 14,402.62 = 5,720.66 : x
2. Step 2: Convert to fraction form
   10,436.42/14,402.62 = 5,720.66/x
3. Step 3: Cross multiply
   10,436.42x = 14,402.62 × 5,720.66
4. Step 4: Simplify right side
   10,436.42x = 82,392,492.13
5. Step 5: Solve for x
   x = 82,392,492.13/10,436.42
6. Step 6: Final answer
   x = 7,894.71