Finding the Fourth Proportional to 23,174,644.32, 31,981,580.53 and 12,721,698

Step by Step Solution

1. Step 1: Write the proportion equation
   23,174,644.32 : 31,981,580.53 = 12,721,698 : x
2. Step 2: Convert to fraction form
   23,174,644.32/31,981,580.53 = 12,721,698/x
3. Step 3: Cross multiply
   23,174,644.32x = 31,981,580.53 × 12,721,698
4. Step 4: Simplify right side
   23,174,644.32x = 406,860,009,033,535.69
5. Step 5: Solve for x
   x = 406,860,009,033,535.69/23,174,644.32
6. Step 6: Final answer
   x = 17,556,256.89