Finding the Fourth Proportional to 6,111.63, 8,435.21 and 3,561.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.63 : 8,435.21 = 3,561.08 : x
2. Step 2: Convert to fraction form
   6,111.63/8,435.21 = 3,561.08/x
3. Step 3: Cross multiply
   6,111.63x = 8,435.21 × 3,561.08
4. Step 4: Simplify right side
   6,111.63x = 30,038,397.65
5. Step 5: Solve for x
   x = 30,038,397.65/6,111.63
6. Step 6: Final answer
   x = 4,914.96