Finding the Fourth Proportional to 13,589.94, 18,755.37 and 7,926.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,589.94 : 18,755.37 = 7,926.51 : x
2. Step 2: Convert to fraction form
   13,589.94/18,755.37 = 7,926.51/x
3. Step 3: Cross multiply
   13,589.94x = 18,755.37 × 7,926.51
4. Step 4: Simplify right side
   13,589.94x = 148,664,627.86
5. Step 5: Solve for x
   x = 148,664,627.86/13,589.94
6. Step 6: Final answer
   x = 10,939.31