Finding the Fourth Proportional to 22,167.53, 30,587.01 and 13,215.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,167.53 : 30,587.01 = 13,215.87 : x
2. Step 2: Convert to fraction form
   22,167.53/30,587.01 = 13,215.87/x
3. Step 3: Cross multiply
   22,167.53x = 30,587.01 × 13,215.87
4. Step 4: Simplify right side
   22,167.53x = 404,233,947.85
5. Step 5: Solve for x
   x = 404,233,947.85/22,167.53
6. Step 6: Final answer
   x = 18,235.41