Finding the Fourth Proportional to 9,359.28, 12,977.35 and 9,047.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,359.28 : 12,977.35 = 9,047.03 : x
2. Step 2: Convert to fraction form
   9,359.28/12,977.35 = 9,047.03/x
3. Step 3: Cross multiply
   9,359.28x = 12,977.35 × 9,047.03
4. Step 4: Simplify right side
   9,359.28x = 117,406,387.27
5. Step 5: Solve for x
   x = 117,406,387.27/9,359.28
6. Step 6: Final answer
   x = 12,544.38