Finding the Fourth Proportional to 23,101.94, 31,880.70 and 12,491.58

Step by Step Solution

1. Step 1: Write the proportion equation
   23,101.94 : 31,880.70 = 12,491.58 : x
2. Step 2: Convert to fraction form
   23,101.94/31,880.70 = 12,491.58/x
3. Step 3: Cross multiply
   23,101.94x = 31,880.70 × 12,491.58
4. Step 4: Simplify right side
   23,101.94x = 398,240,314.51
5. Step 5: Solve for x
   x = 398,240,314.51/23,101.94
6. Step 6: Final answer
   x = 17,238.39