Finding the Fourth Proportional to 13,499.02, 18,626.52 and 7,530.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,499.02 : 18,626.52 = 7,530.40 : x
2. Step 2: Convert to fraction form
   13,499.02/18,626.52 = 7,530.40/x
3. Step 3: Cross multiply
   13,499.02x = 18,626.52 × 7,530.40
4. Step 4: Simplify right side
   13,499.02x = 140,265,146.21
5. Step 5: Solve for x
   x = 140,265,146.21/13,499.02
6. Step 6: Final answer
   x = 10,390.77