Finding the Fourth Proportional to 37,088.55, 55,641.58 and 12,128.51

Step by Step Solution

1. Step 1: Write the proportion equation
   37,088.55 : 55,641.58 = 12,128.51 : x
2. Step 2: Convert to fraction form
   37,088.55/55,641.58 = 12,128.51/x
3. Step 3: Cross multiply
   37,088.55x = 55,641.58 × 12,128.51
4. Step 4: Simplify right side
   37,088.55x = 674,849,211.56
5. Step 5: Solve for x
   x = 674,849,211.56/37,088.55
6. Step 6: Final answer
   x = 18,195.62