Finding the Fourth Proportional to 37,686.71, 52,003.80 and 21,776.28

Step by Step Solution

1. Step 1: Write the proportion equation
   37,686.71 : 52,003.80 = 21,776.28 : x
2. Step 2: Convert to fraction form
   37,686.71/52,003.80 = 21,776.28/x
3. Step 3: Cross multiply
   37,686.71x = 52,003.80 × 21,776.28
4. Step 4: Simplify right side
   37,686.71x = 1,132,449,309.86
5. Step 5: Solve for x
   x = 1,132,449,309.86/37,686.71
6. Step 6: Final answer
   x = 30,049.04