Finding the Fourth Proportional to 31,038.84, 42,834.50 and 16,892.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,038.84 : 42,834.50 = 16,892.60 : x
2. Step 2: Convert to fraction form
   31,038.84/42,834.50 = 16,892.60/x
3. Step 3: Cross multiply
   31,038.84x = 42,834.50 × 16,892.60
4. Step 4: Simplify right side
   31,038.84x = 723,586,074.70
5. Step 5: Solve for x
   x = 723,586,074.70/31,038.84
6. Step 6: Final answer
   x = 23,312.28