Finding the Fourth Proportional to 9,414.12, 12,991.03 and 5,436.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,414.12 : 12,991.03 = 5,436.52 : x
2. Step 2: Convert to fraction form
   9,414.12/12,991.03 = 5,436.52/x
3. Step 3: Cross multiply
   9,414.12x = 12,991.03 × 5,436.52
4. Step 4: Simplify right side
   9,414.12x = 70,625,994.42
5. Step 5: Solve for x
   x = 70,625,994.42/9,414.12
6. Step 6: Final answer
   x = 7,502.13