Finding the Fourth Proportional to 37,978.71, 57,003.81 and 19,272.18

Step by Step Solution

1. Step 1: Write the proportion equation
   37,978.71 : 57,003.81 = 19,272.18 : x
2. Step 2: Convert to fraction form
   37,978.71/57,003.81 = 19,272.18/x
3. Step 3: Cross multiply
   37,978.71x = 57,003.81 × 19,272.18
4. Step 4: Simplify right side
   37,978.71x = 1,098,587,401.99
5. Step 5: Solve for x
   x = 1,098,587,401.99/37,978.71
6. Step 6: Final answer
   x = 28,926.40