Finding the Fourth Proportional to 37,666.10, 51,979.20 and 20,899.10

Step by Step Solution

1. Step 1: Write the proportion equation
   37,666.10 : 51,979.20 = 20,899.10 : x
2. Step 2: Convert to fraction form
   37,666.10/51,979.20 = 20,899.10/x
3. Step 3: Cross multiply
   37,666.10x = 51,979.20 × 20,899.10
4. Step 4: Simplify right side
   37,666.10x = 1,086,318,238.82
5. Step 5: Solve for x
   x = 1,086,318,238.82/37,666.10
6. Step 6: Final answer
   x = 28,840.74