Finding the Fourth Proportional to 37,836.29, 52,213.59 and 20,840.21

Step by Step Solution

1. Step 1: Write the proportion equation
   37,836.29 : 52,213.59 = 20,840.21 : x
2. Step 2: Convert to fraction form
   37,836.29/52,213.59 = 20,840.21/x
3. Step 3: Cross multiply
   37,836.29x = 52,213.59 × 20,840.21
4. Step 4: Simplify right side
   37,836.29x = 1,088,142,180.45
5. Step 5: Solve for x
   x = 1,088,142,180.45/37,836.29
6. Step 6: Final answer
   x = 28,759.22