Finding the Fourth Proportional to 9,112.42, 12,575.15 and 5,133.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.42 : 12,575.15 = 5,133.60 : x
2. Step 2: Convert to fraction form
   9,112.42/12,575.15 = 5,133.60/x
3. Step 3: Cross multiply
   9,112.42x = 12,575.15 × 5,133.60
4. Step 4: Simplify right side
   9,112.42x = 64,555,790.04
5. Step 5: Solve for x
   x = 64,555,790.04/9,112.42
6. Step 6: Final answer
   x = 7,084.37