Finding the Fourth Proportional to 9,091.86, 12,546.93 and 5,315.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.86 : 12,546.93 = 5,315.34 : x
2. Step 2: Convert to fraction form
   9,091.86/12,546.93 = 5,315.34/x
3. Step 3: Cross multiply
   9,091.86x = 12,546.93 × 5,315.34
4. Step 4: Simplify right side
   9,091.86x = 66,691,198.91
5. Step 5: Solve for x
   x = 66,691,198.91/9,091.86
6. Step 6: Final answer
   x = 7,335.26