Finding the Fourth Proportional to 6,900.79, 9,523.34 and 3,916.75

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.79 : 9,523.34 = 3,916.75 : x
2. Step 2: Convert to fraction form
   6,900.79/9,523.34 = 3,916.75/x
3. Step 3: Cross multiply
   6,900.79x = 9,523.34 × 3,916.75
4. Step 4: Simplify right side
   6,900.79x = 37,300,541.95
5. Step 5: Solve for x
   x = 37,300,541.95/6,900.79
6. Step 6: Final answer
   x = 5,405.26