Finding the Fourth Proportional to 37,089.18, 55,642.52 and 12,129.13

Step by Step Solution

1. Step 1: Write the proportion equation
   37,089.18 : 55,642.52 = 12,129.13 : x
2. Step 2: Convert to fraction form
   37,089.18/55,642.52 = 12,129.13/x
3. Step 3: Cross multiply
   37,089.18x = 55,642.52 × 12,129.13
4. Step 4: Simplify right side
   37,089.18x = 674,895,458.48
5. Step 5: Solve for x
   x = 674,895,458.48/37,089.18
6. Step 6: Final answer
   x = 18,196.56