Finding the Fourth Proportional to 11,361.89, 17,047.08 and 5,120.03

Step by Step Solution

1. Step 1: Write the proportion equation
   11,361.89 : 17,047.08 = 5,120.03 : x
2. Step 2: Convert to fraction form
   11,361.89/17,047.08 = 5,120.03/x
3. Step 3: Cross multiply
   11,361.89x = 17,047.08 × 5,120.03
4. Step 4: Simplify right side
   11,361.89x = 87,281,475.78
5. Step 5: Solve for x
   x = 87,281,475.78/11,361.89
6. Step 6: Final answer
   x = 7,681.95