Finding the Fourth Proportional to 57,700.96, 86,566.72 and 18,258.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,700.96 : 86,566.72 = 18,258.72 : x
2. Step 2: Convert to fraction form
   57,700.96/86,566.72 = 18,258.72/x
3. Step 3: Cross multiply
   57,700.96x = 86,566.72 × 18,258.72
4. Step 4: Simplify right side
   57,700.96x = 1,580,597,501.80
5. Step 5: Solve for x
   x = 1,580,597,501.80/57,700.96
6. Step 6: Final answer
   x = 27,392.92