Finding the Fourth Proportional to 48,406.72, 72,597.12 and 13,348.30

Step by Step Solution

1. Step 1: Write the proportion equation
   48,406.72 : 72,597.12 = 13,348.30 : x
2. Step 2: Convert to fraction form
   48,406.72/72,597.12 = 13,348.30/x
3. Step 3: Cross multiply
   48,406.72x = 72,597.12 × 13,348.30
4. Step 4: Simplify right side
   48,406.72x = 969,048,136.90
5. Step 5: Solve for x
   x = 969,048,136.90/48,406.72
6. Step 6: Final answer
   x = 20,018.88