Finding the Fourth Proportional to 9,898.68, 13,645.74 and 7,536.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.68 : 13,645.74 = 7,536.72 : x
2. Step 2: Convert to fraction form
   9,898.68/13,645.74 = 7,536.72/x
3. Step 3: Cross multiply
   9,898.68x = 13,645.74 × 7,536.72
4. Step 4: Simplify right side
   9,898.68x = 102,844,121.57
5. Step 5: Solve for x
   x = 102,844,121.57/9,898.68
6. Step 6: Final answer
   x = 10,389.68