Finding the Fourth Proportional to 9,345.75, 12,897.42 and 5,154.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,345.75 : 12,897.42 = 5,154.27 : x
2. Step 2: Convert to fraction form
   9,345.75/12,897.42 = 5,154.27/x
3. Step 3: Cross multiply
   9,345.75x = 12,897.42 × 5,154.27
4. Step 4: Simplify right side
   9,345.75x = 66,476,784.98
5. Step 5: Solve for x
   x = 66,476,784.98/9,345.75
6. Step 6: Final answer
   x = 7,113.05