Finding the Fourth Proportional to 5,535.31, 7,638.61 and 3,051.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,535.31 : 7,638.61 = 3,051.31 : x
2. Step 2: Convert to fraction form
   5,535.31/7,638.61 = 3,051.31/x
3. Step 3: Cross multiply
   5,535.31x = 7,638.61 × 3,051.31
4. Step 4: Simplify right side
   5,535.31x = 23,307,767.08
5. Step 5: Solve for x
   x = 23,307,767.08/5,535.31
6. Step 6: Final answer
   x = 4,210.74