Finding the Fourth Proportional to 22,460.88, 30,995.64 and 12,390.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,460.88 : 30,995.64 = 12,390.30 : x
2. Step 2: Convert to fraction form
   22,460.88/30,995.64 = 12,390.30/x
3. Step 3: Cross multiply
   22,460.88x = 30,995.64 × 12,390.30
4. Step 4: Simplify right side
   22,460.88x = 384,045,278.29
5. Step 5: Solve for x
   x = 384,045,278.29/22,460.88
6. Step 6: Final answer
   x = 17,098.41