Finding the Fourth Proportional to 13,713.78, 18,924.90 and 7,426.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,713.78 : 18,924.90 = 7,426.14 : x
2. Step 2: Convert to fraction form
   13,713.78/18,924.90 = 7,426.14/x
3. Step 3: Cross multiply
   13,713.78x = 18,924.90 × 7,426.14
4. Step 4: Simplify right side
   13,713.78x = 140,538,956.89
5. Step 5: Solve for x
   x = 140,538,956.89/13,713.78
6. Step 6: Final answer
   x = 10,248.01