Finding the Fourth Proportional to 8,941.80, 12,343.42 and 5,404.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,941.80 : 12,343.42 = 5,404.12 : x
2. Step 2: Convert to fraction form
   8,941.80/12,343.42 = 5,404.12/x
3. Step 3: Cross multiply
   8,941.80x = 12,343.42 × 5,404.12
4. Step 4: Simplify right side
   8,941.80x = 66,705,322.89
5. Step 5: Solve for x
   x = 66,705,322.89/8,941.80
6. Step 6: Final answer
   x = 7,459.94