Finding the Fourth Proportional to 37,621.48, 51,914.78 and 20,623

Step by Step Solution

1. Step 1: Write the proportion equation
   37,621.48 : 51,914.78 = 20,623 : x
2. Step 2: Convert to fraction form
   37,621.48/51,914.78 = 20,623/x
3. Step 3: Cross multiply
   37,621.48x = 51,914.78 × 20,623
4. Step 4: Simplify right side
   37,621.48x = 1,070,638,507.94
5. Step 5: Solve for x
   x = 1,070,638,507.94/37,621.48
6. Step 6: Final answer
   x = 28,458.17