Finding the Fourth Proportional to 22,384.57, 30,889.76 and 12,312.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,384.57 : 30,889.76 = 12,312.37 : x
2. Step 2: Convert to fraction form
   22,384.57/30,889.76 = 12,312.37/x
3. Step 3: Cross multiply
   22,384.57x = 30,889.76 × 12,312.37
4. Step 4: Simplify right side
   22,384.57x = 380,326,131.38
5. Step 5: Solve for x
   x = 380,326,131.38/22,384.57
6. Step 6: Final answer
   x = 16,990.55