Finding the Fourth Proportional to 22,870.35, 31,557.96 and 12,798.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,870.35 : 31,557.96 = 12,798.36 : x
2. Step 2: Convert to fraction form
   22,870.35/31,557.96 = 12,798.36/x
3. Step 3: Cross multiply
   22,870.35x = 31,557.96 × 12,798.36
4. Step 4: Simplify right side
   22,870.35x = 403,890,132.95
5. Step 5: Solve for x
   x = 403,890,132.95/22,870.35
6. Step 6: Final answer
   x = 17,659.99