Finding the Fourth Proportional to 19,659,128.56, 27,129,723.12 and 10,957,852.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,659,128.56 : 27,129,723.12 = 10,957,852.72 : x
2. Step 2: Convert to fraction form
   19,659,128.56/27,129,723.12 = 10,957,852.72/x
3. Step 3: Cross multiply
   19,659,128.56x = 27,129,723.12 × 10,957,852.72
4. Step 4: Simplify right side
   19,659,128.56x = 297,283,510,283,338.94
5. Step 5: Solve for x
   x = 297,283,510,283,338.94/19,659,128.56
6. Step 6: Final answer
   x = 15,121,906.82