Finding the Fourth Proportional to 37,907.85, 52,315.40 and 21,992.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,907.85 : 52,315.40 = 21,992.31 : x
2. Step 2: Convert to fraction form
   37,907.85/52,315.40 = 21,992.31/x
3. Step 3: Cross multiply
   37,907.85x = 52,315.40 × 21,992.31
4. Step 4: Simplify right side
   37,907.85x = 1,150,536,549.55
5. Step 5: Solve for x
   x = 1,150,536,549.55/37,907.85
6. Step 6: Final answer
   x = 30,350.88