Finding the Fourth Proportional to 22,526.39, 31,086.63 and 12,968.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,526.39 : 31,086.63 = 12,968.28 : x
2. Step 2: Convert to fraction form
   22,526.39/31,086.63 = 12,968.28/x
3. Step 3: Cross multiply
   22,526.39x = 31,086.63 × 12,968.28
4. Step 4: Simplify right side
   22,526.39x = 403,140,122.10
5. Step 5: Solve for x
   x = 403,140,122.10/22,526.39
6. Step 6: Final answer
   x = 17,896.35