Finding the Fourth Proportional to 48,620.38, 72,942.86 and 13,560.04

Step by Step Solution

1. Step 1: Write the proportion equation
   48,620.38 : 72,942.86 = 13,560.04 : x
2. Step 2: Convert to fraction form
   48,620.38/72,942.86 = 13,560.04/x
3. Step 3: Cross multiply
   48,620.38x = 72,942.86 × 13,560.04
4. Step 4: Simplify right side
   48,620.38x = 989,108,099.31
5. Step 5: Solve for x
   x = 989,108,099.31/48,620.38
6. Step 6: Final answer
   x = 20,343.49