Finding the Fourth Proportional to 9,685.02, 13,365.18 and 5,436.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,685.02 : 13,365.18 = 5,436.12 : x
2. Step 2: Convert to fraction form
   9,685.02/13,365.18 = 5,436.12/x
3. Step 3: Cross multiply
   9,685.02x = 13,365.18 × 5,436.12
4. Step 4: Simplify right side
   9,685.02x = 72,654,722.30
5. Step 5: Solve for x
   x = 72,654,722.30/9,685.02
6. Step 6: Final answer
   x = 7,501.76