Finding the Fourth Proportional to 9,133.30, 12,603.42 and 5,154.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,133.30 : 12,603.42 = 5,154.78 : x
2. Step 2: Convert to fraction form
   9,133.30/12,603.42 = 5,154.78/x
3. Step 3: Cross multiply
   9,133.30x = 12,603.42 × 5,154.78
4. Step 4: Simplify right side
   9,133.30x = 64,967,857.35
5. Step 5: Solve for x
   x = 64,967,857.35/9,133.30
6. Step 6: Final answer
   x = 7,113.30