Finding the Fourth Proportional to 12,111,069.65, 18,170,110.98 and 3,591,611.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111,069.65 : 18,170,110.98 = 3,591,611.15 : x
2. Step 2: Convert to fraction form
   12,111,069.65/18,170,110.98 = 3,591,611.15/x
3. Step 3: Cross multiply
   12,111,069.65x = 18,170,110.98 × 3,591,611.15
4. Step 4: Simplify right side
   12,111,069.65x = 65,259,973,101,654.88
5. Step 5: Solve for x
   x = 65,259,973,101,654.88/12,111,069.65
6. Step 6: Final answer
   x = 5,388,456.60