Finding the Fourth Proportional to 5,031.81, 7,533.72 and 2,561.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,031.81 : 7,533.72 = 2,561.31 : x
2. Step 2: Convert to fraction form
   5,031.81/7,533.72 = 2,561.31/x
3. Step 3: Cross multiply
   5,031.81x = 7,533.72 × 2,561.31
4. Step 4: Simplify right side
   5,031.81x = 19,296,192.37
5. Step 5: Solve for x
   x = 19,296,192.37/5,031.81
6. Step 6: Final answer
   x = 3,834.84