Finding the Fourth Proportional to 37,728.02, 52,061.63 and 21,813.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,728.02 : 52,061.63 = 21,813.50 : x
2. Step 2: Convert to fraction form
   37,728.02/52,061.63 = 21,813.50/x
3. Step 3: Cross multiply
   37,728.02x = 52,061.63 × 21,813.50
4. Step 4: Simplify right side
   37,728.02x = 1,135,646,387.09
5. Step 5: Solve for x
   x = 1,135,646,387.09/37,728.02
6. Step 6: Final answer
   x = 30,100.87