Finding the Fourth Proportional to 13,066,209.72, 19,601,930.76 and 7,317,119.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066,209.72 : 19,601,930.76 = 7,317,119.10 : x
2. Step 2: Convert to fraction form
   13,066,209.72/19,601,930.76 = 7,317,119.10/x
3. Step 3: Cross multiply
   13,066,209.72x = 19,601,930.76 × 7,317,119.10
4. Step 4: Simplify right side
   13,066,209.72x = 143,429,661,960,873.53
5. Step 5: Solve for x
   x = 143,429,661,960,873.53/13,066,209.72
6. Step 6: Final answer
   x = 10,977,143.72