Finding the Fourth Proportional to 7,778.79, 10,734.71 and 4,242.01

Step by Step Solution

1. Step 1: Write the proportion equation
   7,778.79 : 10,734.71 = 4,242.01 : x
2. Step 2: Convert to fraction form
   7,778.79/10,734.71 = 4,242.01/x
3. Step 3: Cross multiply
   7,778.79x = 10,734.71 × 4,242.01
4. Step 4: Simplify right side
   7,778.79x = 45,536,709.40
5. Step 5: Solve for x
   x = 45,536,709.40/7,778.79
6. Step 6: Final answer
   x = 5,853.96