Finding the Fourth Proportional to 7,816.56, 10,786.76 and 4,279.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,816.56 : 10,786.76 = 4,279.72 : x
2. Step 2: Convert to fraction form
   7,816.56/10,786.76 = 4,279.72/x
3. Step 3: Cross multiply
   7,816.56x = 10,786.76 × 4,279.72
4. Step 4: Simplify right side
   7,816.56x = 46,164,312.51
5. Step 5: Solve for x
   x = 46,164,312.51/7,816.56
6. Step 6: Final answer
   x = 5,905.96