Finding the Fourth Proportional to 19,666,087.20, 27,139,314.06 and 10,964,801.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,666,087.20 : 27,139,314.06 = 10,964,801.52 : x
2. Step 2: Convert to fraction form
   19,666,087.20/27,139,314.06 = 10,964,801.52/x
3. Step 3: Cross multiply
   19,666,087.20x = 27,139,314.06 × 10,964,801.52
4. Step 4: Simplify right side
   19,666,087.20x = 297,577,192,056,845.38
5. Step 5: Solve for x
   x = 297,577,192,056,845.38/19,666,087.20
6. Step 6: Final answer
   x = 15,131,489.50