Finding the Fourth Proportional to 37,188.82, 51,320.53 and 20,421.82

Step by Step Solution

1. Step 1: Write the proportion equation
   37,188.82 : 51,320.53 = 20,421.82 : x
2. Step 2: Convert to fraction form
   37,188.82/51,320.53 = 20,421.82/x
3. Step 3: Cross multiply
   37,188.82x = 51,320.53 × 20,421.82
4. Step 4: Simplify right side
   37,188.82x = 1,048,058,446.61
5. Step 5: Solve for x
   x = 1,048,058,446.61/37,188.82
6. Step 6: Final answer
   x = 28,182.09