Finding the Fourth Proportional to 22,699.78, 31,322.70 and 12,626.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,699.78 : 31,322.70 = 12,626.22 : x
2. Step 2: Convert to fraction form
   22,699.78/31,322.70 = 12,626.22/x
3. Step 3: Cross multiply
   22,699.78x = 31,322.70 × 12,626.22
4. Step 4: Simplify right side
   22,699.78x = 395,487,301.19
5. Step 5: Solve for x
   x = 395,487,301.19/22,699.78
6. Step 6: Final answer
   x = 17,422.52