Finding the Fourth Proportional to 9,308.79, 12,845.81 and 5,117.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,308.79 : 12,845.81 = 5,117.01 : x
2. Step 2: Convert to fraction form
   9,308.79/12,845.81 = 5,117.01/x
3. Step 3: Cross multiply
   9,308.79x = 12,845.81 × 5,117.01
4. Step 4: Simplify right side
   9,308.79x = 65,732,112.64
5. Step 5: Solve for x
   x = 65,732,112.64/9,308.79
6. Step 6: Final answer
   x = 7,061.30