Finding the Fourth Proportional to 9,344,745.90, 12,898,507.23 and 5,478,103.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,344,745.90 : 12,898,507.23 = 5,478,103.98 : x
2. Step 2: Convert to fraction form
   9,344,745.90/12,898,507.23 = 5,478,103.98/x
3. Step 3: Cross multiply
   9,344,745.90x = 12,898,507.23 × 5,478,103.98
4. Step 4: Simplify right side
   9,344,745.90x = 70,659,363,792,721.78
5. Step 5: Solve for x
   x = 70,659,363,792,721.78/9,344,745.90
6. Step 6: Final answer
   x = 7,561,400.23