Finding the Fourth Proportional to 10,520.51, 14,518.36 and 5,740.39

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520.51 : 14,518.36 = 5,740.39 : x
2. Step 2: Convert to fraction form
   10,520.51/14,518.36 = 5,740.39/x
3. Step 3: Cross multiply
   10,520.51x = 14,518.36 × 5,740.39
4. Step 4: Simplify right side
   10,520.51x = 83,341,084.86
5. Step 5: Solve for x
   x = 83,341,084.86/10,520.51
6. Step 6: Final answer
   x = 7,921.78