Finding the Fourth Proportional to 12,648,990.69, 18,973,141.52 and 3,551,163.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,648,990.69 : 18,973,141.52 = 3,551,163.57 : x
2. Step 2: Convert to fraction form
   12,648,990.69/18,973,141.52 = 3,551,163.57/x
3. Step 3: Cross multiply
   12,648,990.69x = 18,973,141.52 × 3,551,163.57
4. Step 4: Simplify right side
   12,648,990.69x = 67,376,728,956,522.61
5. Step 5: Solve for x
   x = 67,376,728,956,522.61/12,648,990.69
6. Step 6: Final answer
   x = 5,326,648.63