Finding the Fourth Proportional to 31,085.22, 42,898.28 and 18,341.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,085.22 : 42,898.28 = 18,341.52 : x
2. Step 2: Convert to fraction form
   31,085.22/42,898.28 = 18,341.52/x
3. Step 3: Cross multiply
   31,085.22x = 42,898.28 × 18,341.52
4. Step 4: Simplify right side
   31,085.22x = 786,819,660.59
5. Step 5: Solve for x
   x = 786,819,660.59/31,085.22
6. Step 6: Final answer
   x = 25,311.70