Finding the Fourth Proportional to 37,766.78, 52,124.68 and 21,860

Step by Step Solution

1. Step 1: Write the proportion equation
   37,766.78 : 52,124.68 = 21,860 : x
2. Step 2: Convert to fraction form
   37,766.78/52,124.68 = 21,860/x
3. Step 3: Cross multiply
   37,766.78x = 52,124.68 × 21,860
4. Step 4: Simplify right side
   37,766.78x = 1,139,445,504.80
5. Step 5: Solve for x
   x = 1,139,445,504.80/37,766.78
6. Step 6: Final answer
   x = 30,170.58