Finding the Fourth Proportional to 10,458.69, 14,430.51 and 5,921.43

Step by Step Solution

1. Step 1: Write the proportion equation
   10,458.69 : 14,430.51 = 5,921.43 : x
2. Step 2: Convert to fraction form
   10,458.69/14,430.51 = 5,921.43/x
3. Step 3: Cross multiply
   10,458.69x = 14,430.51 × 5,921.43
4. Step 4: Simplify right side
   10,458.69x = 85,449,254.83
5. Step 5: Solve for x
   x = 85,449,254.83/10,458.69
6. Step 6: Final answer
   x = 8,170.17