Finding the Fourth Proportional to 10,436.48, 14,402.88 and 5,720.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.48 : 14,402.88 = 5,720.48 : x
2. Step 2: Convert to fraction form
   10,436.48/14,402.88 = 5,720.48/x
3. Step 3: Cross multiply
   10,436.48x = 14,402.88 × 5,720.48
4. Step 4: Simplify right side
   10,436.48x = 82,391,386.98
5. Step 5: Solve for x
   x = 82,391,386.98/10,436.48
6. Step 6: Final answer
   x = 7,894.56