Finding the Fourth Proportional to 10,112.91, 13,956.29 and 5,636.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,112.91 : 13,956.29 = 5,636.69 : x
2. Step 2: Convert to fraction form
   10,112.91/13,956.29 = 5,636.69/x
3. Step 3: Cross multiply
   10,112.91x = 13,956.29 × 5,636.69
4. Step 4: Simplify right side
   10,112.91x = 78,667,280.28
5. Step 5: Solve for x
   x = 78,667,280.28/10,112.91
6. Step 6: Final answer
   x = 7,778.90