Finding the Fourth Proportional to 31,428.02, 43,371.41 and 17,280.86

Step by Step Solution

1. Step 1: Write the proportion equation
   31,428.02 : 43,371.41 = 17,280.86 : x
2. Step 2: Convert to fraction form
   31,428.02/43,371.41 = 17,280.86/x
3. Step 3: Cross multiply
   31,428.02x = 43,371.41 × 17,280.86
4. Step 4: Simplify right side
   31,428.02x = 749,494,960.95
5. Step 5: Solve for x
   x = 749,494,960.95/31,428.02
6. Step 6: Final answer
   x = 23,847.99