Finding the Fourth Proportional to 37,280.50, 51,447.09 and 20,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,280.50 : 51,447.09 = 20,513.50 : x
2. Step 2: Convert to fraction form
   37,280.50/51,447.09 = 20,513.50/x
3. Step 3: Cross multiply
   37,280.50x = 51,447.09 × 20,513.50
4. Step 4: Simplify right side
   37,280.50x = 1,055,359,880.72
5. Step 5: Solve for x
   x = 1,055,359,880.72/37,280.50
6. Step 6: Final answer
   x = 28,308.63