Finding the Fourth Proportional to 37,784.58, 52,143.12 and 20,789.05

Step by Step Solution

1. Step 1: Write the proportion equation
   37,784.58 : 52,143.12 = 20,789.05 : x
2. Step 2: Convert to fraction form
   37,784.58/52,143.12 = 20,789.05/x
3. Step 3: Cross multiply
   37,784.58x = 52,143.12 × 20,789.05
4. Step 4: Simplify right side
   37,784.58x = 1,084,005,798.48
5. Step 5: Solve for x
   x = 1,084,005,798.48/37,784.58
6. Step 6: Final answer
   x = 28,689.11