Finding the Fourth Proportional to 5,916.84, 8,168.22 and 3,926.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,916.84 : 8,168.22 = 3,926.40 : x
2. Step 2: Convert to fraction form
   5,916.84/8,168.22 = 3,926.40/x
3. Step 3: Cross multiply
   5,916.84x = 8,168.22 × 3,926.40
4. Step 4: Simplify right side
   5,916.84x = 32,071,699.01
5. Step 5: Solve for x
   x = 32,071,699.01/5,916.84
6. Step 6: Final answer
   x = 5,420.41