Finding the Fourth Proportional to 37,871.55, 56,687.34 and 21,181.10

Step by Step Solution

1. Step 1: Write the proportion equation
   37,871.55 : 56,687.34 = 21,181.10 : x
2. Step 2: Convert to fraction form
   37,871.55/56,687.34 = 21,181.10/x
3. Step 3: Cross multiply
   37,871.55x = 56,687.34 × 21,181.10
4. Step 4: Simplify right side
   37,871.55x = 1,200,700,013.27
5. Step 5: Solve for x
   x = 1,200,700,013.27/37,871.55
6. Step 6: Final answer
   x = 31,704.54