Finding the Fourth Proportional to 37,328.18, 51,512.89 and 20,561.18

Step by Step Solution

1. Step 1: Write the proportion equation
   37,328.18 : 51,512.89 = 20,561.18 : x
2. Step 2: Convert to fraction form
   37,328.18/51,512.89 = 20,561.18/x
3. Step 3: Cross multiply
   37,328.18x = 51,512.89 × 20,561.18
4. Step 4: Simplify right side
   37,328.18x = 1,059,165,803.61
5. Step 5: Solve for x
   x = 1,059,165,803.61/37,328.18
6. Step 6: Final answer
   x = 28,374.43