Finding the Fourth Proportional to 37,780.92, 52,134.42 and 21,866.40

Step by Step Solution

1. Step 1: Write the proportion equation
   37,780.92 : 52,134.42 = 21,866.40 : x
2. Step 2: Convert to fraction form
   37,780.92/52,134.42 = 21,866.40/x
3. Step 3: Cross multiply
   37,780.92x = 52,134.42 × 21,866.40
4. Step 4: Simplify right side
   37,780.92x = 1,139,992,081.49
5. Step 5: Solve for x
   x = 1,139,992,081.49/37,780.92
6. Step 6: Final answer
   x = 30,173.75