Finding the Fourth Proportional to 37,039.57, 51,115.20 and 20,907.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,039.57 : 51,115.20 = 20,907.72 : x
2. Step 2: Convert to fraction form
   37,039.57/51,115.20 = 20,907.72/x
3. Step 3: Cross multiply
   37,039.57x = 51,115.20 × 20,907.72
4. Step 4: Simplify right side
   37,039.57x = 1,068,702,289.34
5. Step 5: Solve for x
   x = 1,068,702,289.34/37,039.57
6. Step 6: Final answer
   x = 28,852.99