Finding the Fourth Proportional to 3,624.21, 5,001.31 and 2,131.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,624.21 : 5,001.31 = 2,131.78 : x
2. Step 2: Convert to fraction form
   3,624.21/5,001.31 = 2,131.78/x
3. Step 3: Cross multiply
   3,624.21x = 5,001.31 × 2,131.78
4. Step 4: Simplify right side
   3,624.21x = 10,661,692.63
5. Step 5: Solve for x
   x = 10,661,692.63/3,624.21
6. Step 6: Final answer
   x = 2,941.80