Finding the Fourth Proportional to 12,235.01, 18,355.25 and 3,915.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,235.01 : 18,355.25 = 3,915.53 : x
2. Step 2: Convert to fraction form
   12,235.01/18,355.25 = 3,915.53/x
3. Step 3: Cross multiply
   12,235.01x = 18,355.25 × 3,915.53
4. Step 4: Simplify right side
   12,235.01x = 71,870,440.26
5. Step 5: Solve for x
   x = 71,870,440.26/12,235.01
6. Step 6: Final answer
   x = 5,874.16