Finding the Fourth Proportional to 48,638.10, 72,903.15 and 19,046.10

Step by Step Solution

1. Step 1: Write the proportion equation
   48,638.10 : 72,903.15 = 19,046.10 : x
2. Step 2: Convert to fraction form
   48,638.10/72,903.15 = 19,046.10/x
3. Step 3: Cross multiply
   48,638.10x = 72,903.15 × 19,046.10
4. Step 4: Simplify right side
   48,638.10x = 1,388,520,685.22
5. Step 5: Solve for x
   x = 1,388,520,685.22/48,638.10
6. Step 6: Final answer
   x = 28,548.00