Finding the Fourth Proportional to 22,921.68, 31,631.86 and 12,850.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,921.68 : 31,631.86 = 12,850.12 : x
2. Step 2: Convert to fraction form
   22,921.68/31,631.86 = 12,850.12/x
3. Step 3: Cross multiply
   22,921.68x = 31,631.86 × 12,850.12
4. Step 4: Simplify right side
   22,921.68x = 406,473,196.82
5. Step 5: Solve for x
   x = 406,473,196.82/22,921.68
6. Step 6: Final answer
   x = 17,733.13