Finding the Fourth Proportional to 25,288.94, 37,956.71 and 12,817.81

Step by Step Solution

1. Step 1: Write the proportion equation
   25,288.94 : 37,956.71 = 12,817.81 : x
2. Step 2: Convert to fraction form
   25,288.94/37,956.71 = 12,817.81/x
3. Step 3: Cross multiply
   25,288.94x = 37,956.71 × 12,817.81
4. Step 4: Simplify right side
   25,288.94x = 486,521,897.01
5. Step 5: Solve for x
   x = 486,521,897.01/25,288.94
6. Step 6: Final answer
   x = 19,238.52