Finding the Fourth Proportional to 11,142.50, 15,380.64 and 7,603.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,142.50 : 15,380.64 = 7,603.18 : x
2. Step 2: Convert to fraction form
   11,142.50/15,380.64 = 7,603.18/x
3. Step 3: Cross multiply
   11,142.50x = 15,380.64 × 7,603.18
4. Step 4: Simplify right side
   11,142.50x = 116,941,774.44
5. Step 5: Solve for x
   x = 116,941,774.44/11,142.50
6. Step 6: Final answer
   x = 10,495.11