Finding the Fourth Proportional to 12,900,929.82, 17,803,278.01 and 7,099,711.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900,929.82 : 17,803,278.01 = 7,099,711.56 : x
2. Step 2: Convert to fraction form
   12,900,929.82/17,803,278.01 = 7,099,711.56/x
3. Step 3: Cross multiply
   12,900,929.82x = 17,803,278.01 × 7,099,711.56
4. Step 4: Simplify right side
   12,900,929.82x = 126,398,138,635,603.16
5. Step 5: Solve for x
   x = 126,398,138,635,603.16/12,900,929.82
6. Step 6: Final answer
   x = 9,797,599.12