Finding the Fourth Proportional to 9,388.73, 12,956.47 and 5,409.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,388.73 : 12,956.47 = 5,409.88 : x
2. Step 2: Convert to fraction form
   9,388.73/12,956.47 = 5,409.88/x
3. Step 3: Cross multiply
   9,388.73x = 12,956.47 × 5,409.88
4. Step 4: Simplify right side
   9,388.73x = 70,092,902.01
5. Step 5: Solve for x
   x = 70,092,902.01/9,388.73
6. Step 6: Final answer
   x = 7,465.64