Finding the Fourth Proportional to 31,758.89, 43,812.90 and 19,825.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,758.89 : 43,812.90 = 19,825.16 : x
2. Step 2: Convert to fraction form
   31,758.89/43,812.90 = 19,825.16/x
3. Step 3: Cross multiply
   31,758.89x = 43,812.90 × 19,825.16
4. Step 4: Simplify right side
   31,758.89x = 868,597,533.50
5. Step 5: Solve for x
   x = 868,597,533.50/31,758.89
6. Step 6: Final answer
   x = 27,349.75