Finding the Fourth Proportional to 6,789.30, 9,377.01 and 5,409.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.30 : 9,377.01 = 5,409.06 : x
2. Step 2: Convert to fraction form
   6,789.30/9,377.01 = 5,409.06/x
3. Step 3: Cross multiply
   6,789.30x = 9,377.01 × 5,409.06
4. Step 4: Simplify right side
   6,789.30x = 50,720,809.71
5. Step 5: Solve for x
   x = 50,720,809.71/6,789.30
6. Step 6: Final answer
   x = 7,470.70