Finding the Fourth Proportional to 11,911,543.07, 17,858,603.86 and 3,819,912.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911,543.07 : 17,858,603.86 = 3,819,912.80 : x
2. Step 2: Convert to fraction form
   11,911,543.07/17,858,603.86 = 3,819,912.80/x
3. Step 3: Cross multiply
   11,911,543.07x = 17,858,603.86 × 3,819,912.80
4. Step 4: Simplify right side
   11,911,543.07x = 68,218,309,376,100.61
5. Step 5: Solve for x
   x = 68,218,309,376,100.61/11,911,543.07
6. Step 6: Final answer
   x = 5,727,075.75