Finding the Fourth Proportional to 6,109.31, 8,428.91 and 3,590.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,109.31 : 8,428.91 = 3,590.62 : x
2. Step 2: Convert to fraction form
   6,109.31/8,428.91 = 3,590.62/x
3. Step 3: Cross multiply
   6,109.31x = 8,428.91 × 3,590.62
4. Step 4: Simplify right side
   6,109.31x = 30,264,970.68
5. Step 5: Solve for x
   x = 30,264,970.68/6,109.31
6. Step 6: Final answer
   x = 4,953.91