Finding the Fourth Proportional to 15,216.18, 22,793.27 and 12,415.00

Step by Step Solution

1. Step 1: Write the proportion equation
   15,216.18 : 22,793.27 = 12,415.00 : x
2. Step 2: Convert to fraction form
   15,216.18/22,793.27 = 12,415.00/x
3. Step 3: Cross multiply
   15,216.18x = 22,793.27 × 12,415.00
4. Step 4: Simplify right side
   15,216.18x = 282,978,411.37
5. Step 5: Solve for x
   x = 282,978,411.37/15,216.18
6. Step 6: Final answer
   x = 18,597.21