Finding the Fourth Proportional to 57,887.33, 86,830.05 and 18,443.91

Step by Step Solution

1. Step 1: Write the proportion equation
   57,887.33 : 86,830.05 = 18,443.91 : x
2. Step 2: Convert to fraction form
   57,887.33/86,830.05 = 18,443.91/x
3. Step 3: Cross multiply
   57,887.33x = 86,830.05 × 18,443.91
4. Step 4: Simplify right side
   57,887.33x = 1,601,485,627.50
5. Step 5: Solve for x
   x = 1,601,485,627.50/57,887.33
6. Step 6: Final answer
   x = 27,665.56