Finding the Fourth Proportional to 10,830.78, 16,251.34 and 5,900.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.78 : 16,251.34 = 5,900.31 : x
2. Step 2: Convert to fraction form
   10,830.78/16,251.34 = 5,900.31/x
3. Step 3: Cross multiply
   10,830.78x = 16,251.34 × 5,900.31
4. Step 4: Simplify right side
   10,830.78x = 95,887,914.41
5. Step 5: Solve for x
   x = 95,887,914.41/10,830.78
6. Step 6: Final answer
   x = 8,853.28