Finding the Fourth Proportional to 37,871.55, 52,262.72 and 21,965.21

Step by Step Solution

1. Step 1: Write the proportion equation
   37,871.55 : 52,262.72 = 21,965.21 : x
2. Step 2: Convert to fraction form
   37,871.55/52,262.72 = 21,965.21/x
3. Step 3: Cross multiply
   37,871.55x = 52,262.72 × 21,965.21
4. Step 4: Simplify right side
   37,871.55x = 1,147,961,527.19
5. Step 5: Solve for x
   x = 1,147,961,527.19/37,871.55
6. Step 6: Final answer
   x = 30,311.98