Finding the Fourth Proportional to 6,152.31, 8,492.99 and 3,917.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,152.31 : 8,492.99 = 3,917.21 : x
2. Step 2: Convert to fraction form
   6,152.31/8,492.99 = 3,917.21/x
3. Step 3: Cross multiply
   6,152.31x = 8,492.99 × 3,917.21
4. Step 4: Simplify right side
   6,152.31x = 33,268,763.31
5. Step 5: Solve for x
   x = 33,268,763.31/6,152.31
6. Step 6: Final answer
   x = 5,407.52