Finding the Fourth Proportional to 21,314,128, 29,414,196.48 and 11,656,336

Step by Step Solution

1. Step 1: Write the proportion equation
   21,314,128 : 29,414,196.48 = 11,656,336 : x
2. Step 2: Convert to fraction form
   21,314,128/29,414,196.48 = 11,656,336/x
3. Step 3: Cross multiply
   21,314,128x = 29,414,196.48 × 11,656,336
4. Step 4: Simplify right side
   21,314,128x = 342,861,757,340,897.31
5. Step 5: Solve for x
   x = 342,861,757,340,897.31/21,314,128
6. Step 6: Final answer
   x = 16,086,126.41