Finding the Fourth Proportional to 20,746.31, 31,109.72 and 7,589.48

Step by Step Solution

1. Step 1: Write the proportion equation
   20,746.31 : 31,109.72 = 7,589.48 : x
2. Step 2: Convert to fraction form
   20,746.31/31,109.72 = 7,589.48/x
3. Step 3: Cross multiply
   20,746.31x = 31,109.72 × 7,589.48
4. Step 4: Simplify right side
   20,746.31x = 236,106,404.25
5. Step 5: Solve for x
   x = 236,106,404.25/20,746.31
6. Step 6: Final answer
   x = 11,380.65