Finding the Fourth Proportional to 10,081.86, 13,912.70 and 5,890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.86 : 13,912.70 = 5,890.10 : x
2. Step 2: Convert to fraction form
   10,081.86/13,912.70 = 5,890.10/x
3. Step 3: Cross multiply
   10,081.86x = 13,912.70 × 5,890.10
4. Step 4: Simplify right side
   10,081.86x = 81,947,194.27
5. Step 5: Solve for x
   x = 81,947,194.27/10,081.86
6. Step 6: Final answer
   x = 8,128.18