Finding the Fourth Proportional to 37,088.64, 55,636.38 and 12,128.83

Step by Step Solution

1. Step 1: Write the proportion equation
   37,088.64 : 55,636.38 = 12,128.83 : x
2. Step 2: Convert to fraction form
   37,088.64/55,636.38 = 12,128.83/x
3. Step 3: Cross multiply
   37,088.64x = 55,636.38 × 12,128.83
4. Step 4: Simplify right side
   37,088.64x = 674,804,055.74
5. Step 5: Solve for x
   x = 674,804,055.74/37,088.64
6. Step 6: Final answer
   x = 18,194.36