Finding the Fourth Proportional to 37,123.56, 55,676.16 and 12,157.20

Step by Step Solution

1. Step 1: Write the proportion equation
   37,123.56 : 55,676.16 = 12,157.20 : x
2. Step 2: Convert to fraction form
   37,123.56/55,676.16 = 12,157.20/x
3. Step 3: Cross multiply
   37,123.56x = 55,676.16 × 12,157.20
4. Step 4: Simplify right side
   37,123.56x = 676,866,212.35
5. Step 5: Solve for x
   x = 676,866,212.35/37,123.56
6. Step 6: Final answer
   x = 18,232.79