Finding the Fourth Proportional to 25,100.70, 34,639.43 and 13,770.78

Step by Step Solution

1. Step 1: Write the proportion equation
   25,100.70 : 34,639.43 = 13,770.78 : x
2. Step 2: Convert to fraction form
   25,100.70/34,639.43 = 13,770.78/x
3. Step 3: Cross multiply
   25,100.70x = 34,639.43 × 13,770.78
4. Step 4: Simplify right side
   25,100.70x = 477,011,848.56
5. Step 5: Solve for x
   x = 477,011,848.56/25,100.70
6. Step 6: Final answer
   x = 19,003.92