Finding the Fourth Proportional to 32,515, 48,772.42 and 12,782.72

Step by Step Solution

1. Step 1: Write the proportion equation
   32,515 : 48,772.42 = 12,782.72 : x
2. Step 2: Convert to fraction form
   32,515/48,772.42 = 12,782.72/x
3. Step 3: Cross multiply
   32,515x = 48,772.42 × 12,782.72
4. Step 4: Simplify right side
   32,515x = 623,444,188.58
5. Step 5: Solve for x
   x = 623,444,188.58/32,515
6. Step 6: Final answer
   x = 19,174.05