Finding the Fourth Proportional to 37,708.71, 52,055.71 and 21,790.05

Step by Step Solution

1. Step 1: Write the proportion equation
   37,708.71 : 52,055.71 = 21,790.05 : x
2. Step 2: Convert to fraction form
   37,708.71/52,055.71 = 21,790.05/x
3. Step 3: Cross multiply
   37,708.71x = 52,055.71 × 21,790.05
4. Step 4: Simplify right side
   37,708.71x = 1,134,296,469.21
5. Step 5: Solve for x
   x = 1,134,296,469.21/37,708.71
6. Step 6: Final answer
   x = 30,080.49