Finding the Fourth Proportional to 11,940,610.53, 17,910,817.37 and 3,420,955.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,940,610.53 : 17,910,817.37 = 3,420,955.20 : x
2. Step 2: Convert to fraction form
   11,940,610.53/17,910,817.37 = 3,420,955.20/x
3. Step 3: Cross multiply
   11,940,610.53x = 17,910,817.37 × 3,420,955.20
4. Step 4: Simplify right side
   11,940,610.53x = 61,272,103,818,151.83
5. Step 5: Solve for x
   x = 61,272,103,818,151.83/11,940,610.53
6. Step 6: Final answer
   x = 5,131,404.60