Finding the Fourth Proportional to 7,778.89, 10,734.82 and 4,242.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,778.89 : 10,734.82 = 4,242.03 : x
2. Step 2: Convert to fraction form
   7,778.89/10,734.82 = 4,242.03/x
3. Step 3: Cross multiply
   7,778.89x = 10,734.82 × 4,242.03
4. Step 4: Simplify right side
   7,778.89x = 45,537,428.48
5. Step 5: Solve for x
   x = 45,537,428.48/7,778.89
6. Step 6: Final answer
   x = 5,853.98