Finding the Fourth Proportional to 13,667.71, 18,863.25 and 7,700.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,667.71 : 18,863.25 = 7,700.56 : x
2. Step 2: Convert to fraction form
   13,667.71/18,863.25 = 7,700.56/x
3. Step 3: Cross multiply
   13,667.71x = 18,863.25 × 7,700.56
4. Step 4: Simplify right side
   13,667.71x = 145,257,588.42
5. Step 5: Solve for x
   x = 145,257,588.42/13,667.71
6. Step 6: Final answer
   x = 10,627.79