Finding the Fourth Proportional to 37,786.48, 52,144.50 and 21,870.61

Step by Step Solution

1. Step 1: Write the proportion equation
   37,786.48 : 52,144.50 = 21,870.61 : x
2. Step 2: Convert to fraction form
   37,786.48/52,144.50 = 21,870.61/x
3. Step 3: Cross multiply
   37,786.48x = 52,144.50 × 21,870.61
4. Step 4: Simplify right side
   37,786.48x = 1,140,432,023.15
5. Step 5: Solve for x
   x = 1,140,432,023.15/37,786.48
6. Step 6: Final answer
   x = 30,180.95