Finding the Fourth Proportional to 22,513.77, 31,070.18 and 12,955.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,513.77 : 31,070.18 = 12,955.10 : x
2. Step 2: Convert to fraction form
   22,513.77/31,070.18 = 12,955.10/x
3. Step 3: Cross multiply
   22,513.77x = 31,070.18 × 12,955.10
4. Step 4: Simplify right side
   22,513.77x = 402,517,165.95
5. Step 5: Solve for x
   x = 402,517,165.95/22,513.77
6. Step 6: Final answer
   x = 17,878.71