Finding the Fourth Proportional to 12,417.24, 17,136 and 7,112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.24 : 17,136 = 7,112.52 : x
2. Step 2: Convert to fraction form
   12,417.24/17,136 = 7,112.52/x
3. Step 3: Cross multiply
   12,417.24x = 17,136 × 7,112.52
4. Step 4: Simplify right side
   12,417.24x = 121,880,142.72
5. Step 5: Solve for x
   x = 121,880,142.72/12,417.24
6. Step 6: Final answer
   x = 9,815.40