Finding the Fourth Proportional to 10,436.40, 14,402.61 and 5,720.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.40 : 14,402.61 = 5,720.67 : x
2. Step 2: Convert to fraction form
   10,436.40/14,402.61 = 5,720.67/x
3. Step 3: Cross multiply
   10,436.40x = 14,402.61 × 5,720.67
4. Step 4: Simplify right side
   10,436.40x = 82,392,578.95
5. Step 5: Solve for x
   x = 82,392,578.95/10,436.40
6. Step 6: Final answer
   x = 7,894.73