Finding the Fourth Proportional to 7,603.60, 10,500.18 and 7,189.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,603.60 : 10,500.18 = 7,189.43 : x
2. Step 2: Convert to fraction form
   7,603.60/10,500.18 = 7,189.43/x
3. Step 3: Cross multiply
   7,603.60x = 10,500.18 × 7,189.43
4. Step 4: Simplify right side
   7,603.60x = 75,490,358.67
5. Step 5: Solve for x
   x = 75,490,358.67/7,603.60
6. Step 6: Final answer
   x = 9,928.24