Finding the Fourth Proportional to 6,900.84, 9,521.52 and 3,916.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.84 : 9,521.52 = 3,916.02 : x
2. Step 2: Convert to fraction form
   6,900.84/9,521.52 = 3,916.02/x
3. Step 3: Cross multiply
   6,900.84x = 9,521.52 × 3,916.02
4. Step 4: Simplify right side
   6,900.84x = 37,286,462.75
5. Step 5: Solve for x
   x = 37,286,462.75/6,900.84
6. Step 6: Final answer
   x = 5,403.18