Finding the Fourth Proportional to 37,429.94, 56,153.76 and 12,129.41

Step by Step Solution

1. Step 1: Write the proportion equation
   37,429.94 : 56,153.76 = 12,129.41 : x
2. Step 2: Convert to fraction form
   37,429.94/56,153.76 = 12,129.41/x
3. Step 3: Cross multiply
   37,429.94x = 56,153.76 × 12,129.41
4. Step 4: Simplify right side
   37,429.94x = 681,111,978.08
5. Step 5: Solve for x
   x = 681,111,978.08/37,429.94
6. Step 6: Final answer
   x = 18,196.98