Finding the Fourth Proportional to 22,312.29, 30,788.67 and 13,359.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,312.29 : 30,788.67 = 13,359.55 : x
2. Step 2: Convert to fraction form
   22,312.29/30,788.67 = 13,359.55/x
3. Step 3: Cross multiply
   22,312.29x = 30,788.67 × 13,359.55
4. Step 4: Simplify right side
   22,312.29x = 411,322,776.30
5. Step 5: Solve for x
   x = 411,322,776.30/22,312.29
6. Step 6: Final answer
   x = 18,434.81