Finding the Fourth Proportional to 21,380.77, 32,040.78 and 10,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,380.77 : 32,040.78 = 10,124.10 : x
2. Step 2: Convert to fraction form
   21,380.77/32,040.78 = 10,124.10/x
3. Step 3: Cross multiply
   21,380.77x = 32,040.78 × 10,124.10
4. Step 4: Simplify right side
   21,380.77x = 324,384,060.80
5. Step 5: Solve for x
   x = 324,384,060.80/21,380.77
6. Step 6: Final answer
   x = 15,171.77