Finding the Fourth Proportional to 19,699,111.86, 27,192,028.72 and 11,858,988.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,699,111.86 : 27,192,028.72 = 11,858,988.72 : x
2. Step 2: Convert to fraction form
   19,699,111.86/27,192,028.72 = 11,858,988.72/x
3. Step 3: Cross multiply
   19,699,111.86x = 27,192,028.72 × 11,858,988.72
4. Step 4: Simplify right side
   19,699,111.86x = 322,469,961,864,396.06
5. Step 5: Solve for x
   x = 322,469,961,864,396.06/19,699,111.86
6. Step 6: Final answer
   x = 16,369,771.60