Finding the Fourth Proportional to 12,356.36, 17,047.55 and 7,047.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,356.36 : 17,047.55 = 7,047.35 : x
2. Step 2: Convert to fraction form
   12,356.36/17,047.55 = 7,047.35/x
3. Step 3: Cross multiply
   12,356.36x = 17,047.55 × 7,047.35
4. Step 4: Simplify right side
   12,356.36x = 120,139,931.02
5. Step 5: Solve for x
   x = 120,139,931.02/12,356.36
6. Step 6: Final answer
   x = 9,722.93