Finding the Fourth Proportional to 13,222.18, 18,246.42 and 7,254.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,222.18 : 18,246.42 = 7,254.10 : x
2. Step 2: Convert to fraction form
   13,222.18/18,246.42 = 7,254.10/x
3. Step 3: Cross multiply
   13,222.18x = 18,246.42 × 7,254.10
4. Step 4: Simplify right side
   13,222.18x = 132,361,355.32
5. Step 5: Solve for x
   x = 132,361,355.32/13,222.18
6. Step 6: Final answer
   x = 10,010.55