Finding the Fourth Proportional to 10,436.45, 14,402.34 and 5,720.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,436.45 : 14,402.34 = 5,720.63 : x
2. Step 2: Convert to fraction form
   10,436.45/14,402.34 = 5,720.63/x
3. Step 3: Cross multiply
   10,436.45x = 14,402.34 × 5,720.63
4. Step 4: Simplify right side
   10,436.45x = 82,390,386.26
5. Step 5: Solve for x
   x = 82,390,386.26/10,436.45
6. Step 6: Final answer
   x = 7,894.49