Finding the Fourth Proportional to 9,340.34, 12,889.77 and 5,091.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.34 : 12,889.77 = 5,091.50 : x
2. Step 2: Convert to fraction form
   9,340.34/12,889.77 = 5,091.50/x
3. Step 3: Cross multiply
   9,340.34x = 12,889.77 × 5,091.50
4. Step 4: Simplify right side
   9,340.34x = 65,628,263.96
5. Step 5: Solve for x
   x = 65,628,263.96/9,340.34
6. Step 6: Final answer
   x = 7,026.32