Finding the Fourth Proportional to 37,089.88, 55,643.57 and 12,129.83

Step by Step Solution

1. Step 1: Write the proportion equation
   37,089.88 : 55,643.57 = 12,129.83 : x
2. Step 2: Convert to fraction form
   37,089.88/55,643.57 = 12,129.83/x
3. Step 3: Cross multiply
   37,089.88x = 55,643.57 × 12,129.83
4. Step 4: Simplify right side
   37,089.88x = 674,947,044.69
5. Step 5: Solve for x
   x = 674,947,044.69/37,089.88
6. Step 6: Final answer
   x = 18,197.61