Finding the Fourth Proportional to 6,906.72, 10,360.42 and 1,977.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,906.72 : 10,360.42 = 1,977.08 : x
2. Step 2: Convert to fraction form
   6,906.72/10,360.42 = 1,977.08/x
3. Step 3: Cross multiply
   6,906.72x = 10,360.42 × 1,977.08
4. Step 4: Simplify right side
   6,906.72x = 20,483,379.17
5. Step 5: Solve for x
   x = 20,483,379.17/6,906.72
6. Step 6: Final answer
   x = 2,965.72