Finding the Fourth Proportional to 21,308,142.73, 29,385,626.73 and 13,963,308.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,308,142.73 : 29,385,626.73 = 13,963,308.25 : x
2. Step 2: Convert to fraction form
   21,308,142.73/29,385,626.73 = 13,963,308.25/x
3. Step 3: Cross multiply
   21,308,142.73x = 29,385,626.73 × 13,963,308.25
4. Step 4: Simplify right side
   21,308,142.73x = 410,320,564,150,429.50
5. Step 5: Solve for x
   x = 410,320,564,150,429.50/21,308,142.73
6. Step 6: Final answer
   x = 19,256,514.72