Finding the Fourth Proportional to 12,420,973.50, 17,139,741.42 and 9,159,544.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,420,973.50 : 17,139,741.42 = 9,159,544.14 : x
2. Step 2: Convert to fraction form
   12,420,973.50/17,139,741.42 = 9,159,544.14/x
3. Step 3: Cross multiply
   12,420,973.50x = 17,139,741.42 × 9,159,544.14
4. Step 4: Simplify right side
   12,420,973.50x = 156,992,218,084,676.31
5. Step 5: Solve for x
   x = 156,992,218,084,676.31/12,420,973.50
6. Step 6: Final answer
   x = 12,639,284.52