Finding the Fourth Proportional to 9,389.64, 12,956.72 and 5,612.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.64 : 12,956.72 = 5,612.06 : x
2. Step 2: Convert to fraction form
   9,389.64/12,956.72 = 5,612.06/x
3. Step 3: Cross multiply
   9,389.64x = 12,956.72 × 5,612.06
4. Step 4: Simplify right side
   9,389.64x = 72,713,890.04
5. Step 5: Solve for x
   x = 72,713,890.04/9,389.64
6. Step 6: Final answer
   x = 7,744.06