Finding the Fourth Proportional to 37,328.39, 51,513.18 and 20,561.39

Step by Step Solution

1. Step 1: Write the proportion equation
   37,328.39 : 51,513.18 = 20,561.39 : x
2. Step 2: Convert to fraction form
   37,328.39/51,513.18 = 20,561.39/x
3. Step 3: Cross multiply
   37,328.39x = 51,513.18 × 20,561.39
4. Step 4: Simplify right side
   37,328.39x = 1,059,182,654.87
5. Step 5: Solve for x
   x = 1,059,182,654.87/37,328.39
6. Step 6: Final answer
   x = 28,374.72