Finding the Fourth Proportional to 9,141.84, 12,609.72 and 5,603.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,141.84 : 12,609.72 = 5,603.76 : x
2. Step 2: Convert to fraction form
   9,141.84/12,609.72 = 5,603.76/x
3. Step 3: Cross multiply
   9,141.84x = 12,609.72 × 5,603.76
4. Step 4: Simplify right side
   9,141.84x = 70,661,844.55
5. Step 5: Solve for x
   x = 70,661,844.55/9,141.84
6. Step 6: Final answer
   x = 7,729.50