Finding the Fourth Proportional to 15,200.34, 22,809.18 and 12,141.78

Step by Step Solution

1. Step 1: Write the proportion equation
   15,200.34 : 22,809.18 = 12,141.78 : x
2. Step 2: Convert to fraction form
   15,200.34/22,809.18 = 12,141.78/x
3. Step 3: Cross multiply
   15,200.34x = 22,809.18 × 12,141.78
4. Step 4: Simplify right side
   15,200.34x = 276,944,045.54
5. Step 5: Solve for x
   x = 276,944,045.54/15,200.34
6. Step 6: Final answer
   x = 18,219.60