Finding the Fourth Proportional to 37,328.31, 51,510.74 and 20,561.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,328.31 : 51,510.74 = 20,561.31 : x
2. Step 2: Convert to fraction form
   37,328.31/51,510.74 = 20,561.31/x
3. Step 3: Cross multiply
   37,328.31x = 51,510.74 × 20,561.31
4. Step 4: Simplify right side
   37,328.31x = 1,059,128,190.66
5. Step 5: Solve for x
   x = 1,059,128,190.66/37,328.31
6. Step 6: Final answer
   x = 28,373.32