Finding the Fourth Proportional to 39,549.10, 59,291.15 and 18,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,549.10 : 59,291.15 = 18,478.72 : x
2. Step 2: Convert to fraction form
   39,549.10/59,291.15 = 18,478.72/x
3. Step 3: Cross multiply
   39,549.10x = 59,291.15 × 18,478.72
4. Step 4: Simplify right side
   39,549.10x = 1,095,624,559.33
5. Step 5: Solve for x
   x = 1,095,624,559.33/39,549.10
6. Step 6: Final answer
   x = 27,702.89