Finding the Fourth Proportional to 38,456.55, 57,580.61 and 19,949.67

Step by Step Solution

1. Step 1: Write the proportion equation
   38,456.55 : 57,580.61 = 19,949.67 : x
2. Step 2: Convert to fraction form
   38,456.55/57,580.61 = 19,949.67/x
3. Step 3: Cross multiply
   38,456.55x = 57,580.61 × 19,949.67
4. Step 4: Simplify right side
   38,456.55x = 1,148,714,068.15
5. Step 5: Solve for x
   x = 1,148,714,068.15/38,456.55
6. Step 6: Final answer
   x = 29,870.44