Finding the Fourth Proportional to 22,619.72, 31,215.30 and 12,548.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,619.72 : 31,215.30 = 12,548.36 : x
2. Step 2: Convert to fraction form
   22,619.72/31,215.30 = 12,548.36/x
3. Step 3: Cross multiply
   22,619.72x = 31,215.30 × 12,548.36
4. Step 4: Simplify right side
   22,619.72x = 391,700,852.89
5. Step 5: Solve for x
   x = 391,700,852.89/22,619.72
6. Step 6: Final answer
   x = 17,316.78