Finding the Fourth Proportional to 9,307.86, 12,839.94 and 7,066.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,307.86 : 12,839.94 = 7,066.02 : x
2. Step 2: Convert to fraction form
   9,307.86/12,839.94 = 7,066.02/x
3. Step 3: Cross multiply
   9,307.86x = 12,839.94 × 7,066.02
4. Step 4: Simplify right side
   9,307.86x = 90,727,272.84
5. Step 5: Solve for x
   x = 90,727,272.84/9,307.86
6. Step 6: Final answer
   x = 9,747.38