Finding the Fourth Proportional to 22,870.15, 31,560.97 and 12,799.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,870.15 : 31,560.97 = 12,799.53 : x
2. Step 2: Convert to fraction form
   22,870.15/31,560.97 = 12,799.53/x
3. Step 3: Cross multiply
   22,870.15x = 31,560.97 × 12,799.53
4. Step 4: Simplify right side
   22,870.15x = 403,965,663.73
5. Step 5: Solve for x
   x = 403,965,663.73/22,870.15
6. Step 6: Final answer
   x = 17,663.44