Finding the Fourth Proportional to 25,120.74, 34,667.06 and 13,791.30

Step by Step Solution

1. Step 1: Write the proportion equation
   25,120.74 : 34,667.06 = 13,791.30 : x
2. Step 2: Convert to fraction form
   25,120.74/34,667.06 = 13,791.30/x
3. Step 3: Cross multiply
   25,120.74x = 34,667.06 × 13,791.30
4. Step 4: Simplify right side
   25,120.74x = 478,103,824.58
5. Step 5: Solve for x
   x = 478,103,824.58/25,120.74
6. Step 6: Final answer
   x = 19,032.23