Finding the Fourth Proportional to 7,341.10, 9,917.78 and 7,341.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,341.10 : 9,917.78 = 7,341.10 : x
2. Step 2: Convert to fraction form
   7,341.10/9,917.78 = 7,341.10/x
3. Step 3: Cross multiply
   7,341.10x = 9,917.78 × 7,341.10
4. Step 4: Simplify right side
   7,341.10x = 72,807,414.76
5. Step 5: Solve for x
   x = 72,807,414.76/7,341.10
6. Step 6: Final answer
   x = 9,917.78