Finding the Fourth Proportional to 12,111,071.65, 18,170,113.98 and 3,591,613.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111,071.65 : 18,170,113.98 = 3,591,613.15 : x
2. Step 2: Convert to fraction form
   12,111,071.65/18,170,113.98 = 3,591,613.15/x
3. Step 3: Cross multiply
   12,111,071.65x = 18,170,113.98 × 3,591,613.15
4. Step 4: Simplify right side
   12,111,071.65x = 65,260,020,307,566.84
5. Step 5: Solve for x
   x = 65,260,020,307,566.84/12,111,071.65
6. Step 6: Final answer
   x = 5,388,459.60