Finding the Fourth Proportional to 48,048.72, 72,063.06 and 12,980.16

Step by Step Solution

1. Step 1: Write the proportion equation
   48,048.72 : 72,063.06 = 12,980.16 : x
2. Step 2: Convert to fraction form
   48,048.72/72,063.06 = 12,980.16/x
3. Step 3: Cross multiply
   48,048.72x = 72,063.06 × 12,980.16
4. Step 4: Simplify right side
   48,048.72x = 935,390,048.89
5. Step 5: Solve for x
   x = 935,390,048.89/48,048.72
6. Step 6: Final answer
   x = 19,467.53