Finding the Fourth Proportional to 7,770.42, 10,715.94 and 5,113.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,770.42 : 10,715.94 = 5,113.22 : x
2. Step 2: Convert to fraction form
   7,770.42/10,715.94 = 5,113.22/x
3. Step 3: Cross multiply
   7,770.42x = 10,715.94 × 5,113.22
4. Step 4: Simplify right side
   7,770.42x = 54,792,905.15
5. Step 5: Solve for x
   x = 54,792,905.15/7,770.42
6. Step 6: Final answer
   x = 7,051.47