Finding the Fourth Proportional to 12,807,131.64, 17,673,835.74 and 7,005,911.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807,131.64 : 17,673,835.74 = 7,005,911.76 : x
2. Step 2: Convert to fraction form
   12,807,131.64/17,673,835.74 = 7,005,911.76/x
3. Step 3: Cross multiply
   12,807,131.64x = 17,673,835.74 × 7,005,911.76
4. Step 4: Simplify right side
   12,807,131.64x = 123,821,333,655,174.28
5. Step 5: Solve for x
   x = 123,821,333,655,174.28/12,807,131.64
6. Step 6: Final answer
   x = 9,668,154.99