Finding the Fourth Proportional to 12,690,536.56, 17,511,092.56 and 7,256,978.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,690,536.56 : 17,511,092.56 = 7,256,978.80 : x
2. Step 2: Convert to fraction form
   12,690,536.56/17,511,092.56 = 7,256,978.80/x
3. Step 3: Cross multiply
   12,690,536.56x = 17,511,092.56 × 7,256,978.80
4. Step 4: Simplify right side
   12,690,536.56x = 127,077,627,472,757.72
5. Step 5: Solve for x
   x = 127,077,627,472,757.72/12,690,536.56
6. Step 6: Final answer
   x = 10,013,574.04