Finding the Fourth Proportional to 12,638,390.06, 17,440,807.47 and 7,056,722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,638,390.06 : 17,440,807.47 = 7,056,722.72 : x
2. Step 2: Convert to fraction form
   12,638,390.06/17,440,807.47 = 7,056,722.72/x
3. Step 3: Cross multiply
   12,638,390.06x = 17,440,807.47 × 7,056,722.72
4. Step 4: Simplify right side
   12,638,390.06x = 123,074,942,328,694.70
5. Step 5: Solve for x
   x = 123,074,942,328,694.70/12,638,390.06
6. Step 6: Final answer
   x = 9,738,181.98