Finding the Fourth Proportional to 12,221.06, 18,315.02 and 5,192.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,221.06 : 18,315.02 = 5,192.27 : x
2. Step 2: Convert to fraction form
   12,221.06/18,315.02 = 5,192.27/x
3. Step 3: Cross multiply
   12,221.06x = 18,315.02 × 5,192.27
4. Step 4: Simplify right side
   12,221.06x = 95,096,411.36
5. Step 5: Solve for x
   x = 95,096,411.36/12,221.06
6. Step 6: Final answer
   x = 7,781.35