Finding the Fourth Proportional to 37,870.17, 52,258.61 and 20,871.03

Step by Step Solution

1. Step 1: Write the proportion equation
   37,870.17 : 52,258.61 = 20,871.03 : x
2. Step 2: Convert to fraction form
   37,870.17/52,258.61 = 20,871.03/x
3. Step 3: Cross multiply
   37,870.17x = 52,258.61 × 20,871.03
4. Step 4: Simplify right side
   37,870.17x = 1,090,690,912.71
5. Step 5: Solve for x
   x = 1,090,690,912.71/37,870.17
6. Step 6: Final answer
   x = 28,800.79