Finding the Fourth Proportional to 11,510.21, 17,277.17 and 7,138.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,510.21 : 17,277.17 = 7,138.04 : x
2. Step 2: Convert to fraction form
   11,510.21/17,277.17 = 7,138.04/x
3. Step 3: Cross multiply
   11,510.21x = 17,277.17 × 7,138.04
4. Step 4: Simplify right side
   11,510.21x = 123,325,008.47
5. Step 5: Solve for x
   x = 123,325,008.47/11,510.21
6. Step 6: Final answer
   x = 10,714.40