Finding the Fourth Proportional to 10,240.83, 14,128.63 and 5,990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,240.83 : 14,128.63 = 5,990.56 : x
2. Step 2: Convert to fraction form
   10,240.83/14,128.63 = 5,990.56/x
3. Step 3: Cross multiply
   10,240.83x = 14,128.63 × 5,990.56
4. Step 4: Simplify right side
   10,240.83x = 84,638,355.43
5. Step 5: Solve for x
   x = 84,638,355.43/10,240.83
6. Step 6: Final answer
   x = 8,264.79