Finding the Fourth Proportional to 9,785.18, 13,503.56 and 5,536.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,785.18 : 13,503.56 = 5,536.15 : x
2. Step 2: Convert to fraction form
   9,785.18/13,503.56 = 5,536.15/x
3. Step 3: Cross multiply
   9,785.18x = 13,503.56 × 5,536.15
4. Step 4: Simplify right side
   9,785.18x = 74,757,733.69
5. Step 5: Solve for x
   x = 74,757,733.69/9,785.18
6. Step 6: Final answer
   x = 7,639.89