Finding the Fourth Proportional to 59.31, 88.98 and 18.74

Step by Step Solution

1. Step 1: Write the proportion equation
   59.31 : 88.98 = 18.74 : x
2. Step 2: Convert to fraction form
   59.31/88.98 = 18.74/x
3. Step 3: Cross multiply
   59.31x = 88.98 × 18.74
4. Step 4: Simplify right side
   59.31x = 1,667.04
5. Step 5: Solve for x
   x = 1,667.04/59.31
6. Step 6: Final answer
   x = 28.11