Finding the Fourth Proportional to 11,145.83, 15,381.26 and 6,109.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,145.83 : 15,381.26 = 6,109.94 : x
2. Step 2: Convert to fraction form
   11,145.83/15,381.26 = 6,109.94/x
3. Step 3: Cross multiply
   11,145.83x = 15,381.26 × 6,109.94
4. Step 4: Simplify right side
   11,145.83x = 93,978,468.27
5. Step 5: Solve for x
   x = 93,978,468.27/11,145.83
6. Step 6: Final answer
   x = 8,431.72