Finding the Fourth Proportional to 6,911.91, 10,355.54 and 2,900.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,911.91 : 10,355.54 = 2,900.43 : x
2. Step 2: Convert to fraction form
   6,911.91/10,355.54 = 2,900.43/x
3. Step 3: Cross multiply
   6,911.91x = 10,355.54 × 2,900.43
4. Step 4: Simplify right side
   6,911.91x = 30,035,504.38
5. Step 5: Solve for x
   x = 30,035,504.38/6,911.91
6. Step 6: Final answer
   x = 4,345.47