Finding the Fourth Proportional to 12,488.18, 17,253.94 and 12,365.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.18 : 17,253.94 = 12,365.30 : x
2. Step 2: Convert to fraction form
   12,488.18/17,253.94 = 12,365.30/x
3. Step 3: Cross multiply
   12,488.18x = 17,253.94 × 12,365.30
4. Step 4: Simplify right side
   12,488.18x = 213,350,027.10
5. Step 5: Solve for x
   x = 213,350,027.10/12,488.18
6. Step 6: Final answer
   x = 17,084.16