Finding the Fourth Proportional to 22,116.10, 31,040.30 and 22,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,116.10 : 31,040.30 = 22,116.10 : x
2. Step 2: Convert to fraction form
   22,116.10/31,040.30 = 22,116.10/x
3. Step 3: Cross multiply
   22,116.10x = 31,040.30 × 22,116.10
4. Step 4: Simplify right side
   22,116.10x = 686,490,378.83
5. Step 5: Solve for x
   x = 686,490,378.83/22,116.10
6. Step 6: Final answer
   x = 31,040.30