Finding the Fourth Proportional to 13,978,651.98, 19,296,491.58 and 9,397,630.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978,651.98 : 19,296,491.58 = 9,397,630.56 : x
2. Step 2: Convert to fraction form
   13,978,651.98/19,296,491.58 = 9,397,630.56/x
3. Step 3: Cross multiply
   13,978,651.98x = 19,296,491.58 × 9,397,630.56
4. Step 4: Simplify right side
   13,978,651.98x = 181,341,298,972,990.69
5. Step 5: Solve for x
   x = 181,341,298,972,990.69/13,978,651.98
6. Step 6: Final answer
   x = 12,972,731.51