Finding the Fourth Proportional to 12,315.53, 18,469.04 and 4,918.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.53 : 18,469.04 = 4,918.01 : x
2. Step 2: Convert to fraction form
   12,315.53/18,469.04 = 4,918.01/x
3. Step 3: Cross multiply
   12,315.53x = 18,469.04 × 4,918.01
4. Step 4: Simplify right side
   12,315.53x = 90,830,806.48
5. Step 5: Solve for x
   x = 90,830,806.48/12,315.53
6. Step 6: Final answer
   x = 7,375.31