Finding the Fourth Proportional to 10,456.78, 14,431.50 and 5,980.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.78 : 14,431.50 = 5,980.94 : x
2. Step 2: Convert to fraction form
   10,456.78/14,431.50 = 5,980.94/x
3. Step 3: Cross multiply
   10,456.78x = 14,431.50 × 5,980.94
4. Step 4: Simplify right side
   10,456.78x = 86,313,935.61
5. Step 5: Solve for x
   x = 86,313,935.61/10,456.78
6. Step 6: Final answer
   x = 8,254.35