Finding the Fourth Proportional to 9,047.78, 12,486.06 and 5,902.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,047.78 : 12,486.06 = 5,902.16 : x
2. Step 2: Convert to fraction form
   9,047.78/12,486.06 = 5,902.16/x
3. Step 3: Cross multiply
   9,047.78x = 12,486.06 × 5,902.16
4. Step 4: Simplify right side
   9,047.78x = 73,694,723.89
5. Step 5: Solve for x
   x = 73,694,723.89/9,047.78
6. Step 6: Final answer
   x = 8,145.06