Finding the Fourth Proportional to 25,948.50, 38,931.94 and 12,810.10

Step by Step Solution

1. Step 1: Write the proportion equation
   25,948.50 : 38,931.94 = 12,810.10 : x
2. Step 2: Convert to fraction form
   25,948.50/38,931.94 = 12,810.10/x
3. Step 3: Cross multiply
   25,948.50x = 38,931.94 × 12,810.10
4. Step 4: Simplify right side
   25,948.50x = 498,722,044.59
5. Step 5: Solve for x
   x = 498,722,044.59/25,948.50
6. Step 6: Final answer
   x = 19,219.69