Finding the Fourth Proportional to 9,331.16, 12,872.94 and 5,603

Step by Step Solution

1. Step 1: Write the proportion equation
   9,331.16 : 12,872.94 = 5,603 : x
2. Step 2: Convert to fraction form
   9,331.16/12,872.94 = 5,603/x
3. Step 3: Cross multiply
   9,331.16x = 12,872.94 × 5,603
4. Step 4: Simplify right side
   9,331.16x = 72,127,082.82
5. Step 5: Solve for x
   x = 72,127,082.82/9,331.16
6. Step 6: Final answer
   x = 7,729.70