Finding the Fourth Proportional to 23,100.94, 31,879.32 and 12,490.58

Step by Step Solution

1. Step 1: Write the proportion equation
   23,100.94 : 31,879.32 = 12,490.58 : x
2. Step 2: Convert to fraction form
   23,100.94/31,879.32 = 12,490.58/x
3. Step 3: Cross multiply
   23,100.94x = 31,879.32 × 12,490.58
4. Step 4: Simplify right side
   23,100.94x = 398,191,196.81
5. Step 5: Solve for x
   x = 398,191,196.81/23,100.94
6. Step 6: Final answer
   x = 17,237.01