Finding the Fourth Proportional to 9,686.67, 13,388.94 and 7,052.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,686.67 : 13,388.94 = 7,052.55 : x
2. Step 2: Convert to fraction form
   9,686.67/13,388.94 = 7,052.55/x
3. Step 3: Cross multiply
   9,686.67x = 13,388.94 × 7,052.55
4. Step 4: Simplify right side
   9,686.67x = 94,426,168.80
5. Step 5: Solve for x
   x = 94,426,168.80/9,686.67
6. Step 6: Final answer
   x = 9,748.05