Finding the Fourth Proportional to 12,224,628.76, 16,870,087.74 and 7,643,605.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,224,628.76 : 16,870,087.74 = 7,643,605.72 : x
2. Step 2: Convert to fraction form
   12,224,628.76/16,870,087.74 = 7,643,605.72/x
3. Step 3: Cross multiply
   12,224,628.76x = 16,870,087.74 × 7,643,605.72
4. Step 4: Simplify right side
   12,224,628.76x = 128,948,299,146,365.86
5. Step 5: Solve for x
   x = 128,948,299,146,365.86/12,224,628.76
6. Step 6: Final answer
   x = 10,548,238.45