Finding the Fourth Proportional to 13,309,399.48, 18,367,821.68 and 7,506,063.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309,399.48 : 18,367,821.68 = 7,506,063.76 : x
2. Step 2: Convert to fraction form
   13,309,399.48/18,367,821.68 = 7,506,063.76/x
3. Step 3: Cross multiply
   13,309,399.48x = 18,367,821.68 × 7,506,063.76
4. Step 4: Simplify right side
   13,309,399.48x = 137,870,040,662,390.31
5. Step 5: Solve for x
   x = 137,870,040,662,390.31/13,309,399.48
6. Step 6: Final answer
   x = 10,358,847.59