Finding the Fourth Proportional to 12,418.56, 17,136.72 and 7,112.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,418.56 : 17,136.72 = 7,112.52 : x
2. Step 2: Convert to fraction form
   12,418.56/17,136.72 = 7,112.52/x
3. Step 3: Cross multiply
   12,418.56x = 17,136.72 × 7,112.52
4. Step 4: Simplify right side
   12,418.56x = 121,885,263.73
5. Step 5: Solve for x
   x = 121,885,263.73/12,418.56
6. Step 6: Final answer
   x = 9,814.77