Finding the Fourth Proportional to 37,830.99, 52,191.27 and 21,689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   37,830.99 : 52,191.27 = 21,689.31 : x
2. Step 2: Convert to fraction form
   37,830.99/52,191.27 = 21,689.31/x
3. Step 3: Cross multiply
   37,830.99x = 52,191.27 × 21,689.31
4. Step 4: Simplify right side
   37,830.99x = 1,131,992,634.32
5. Step 5: Solve for x
   x = 1,131,992,634.32/37,830.99
6. Step 6: Final answer
   x = 29,922.36