Finding the Fourth Proportional to 12,900,947.56, 17,803,302.41 and 7,099,729.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900,947.56 : 17,803,302.41 = 7,099,729.28 : x
2. Step 2: Convert to fraction form
   12,900,947.56/17,803,302.41 = 7,099,729.28/x
3. Step 3: Cross multiply
   12,900,947.56x = 17,803,302.41 × 7,099,729.28
4. Step 4: Simplify right side
   12,900,947.56x = 126,398,627,356,530.77
5. Step 5: Solve for x
   x = 126,398,627,356,530.77/12,900,947.56
6. Step 6: Final answer
   x = 9,797,623.53