Finding the Fourth Proportional to 3,915,378.89, 5,403,259.71 and 2,196,536.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915,378.89 : 5,403,259.71 = 2,196,536.30 : x
2. Step 2: Convert to fraction form
   3,915,378.89/5,403,259.71 = 2,196,536.30/x
3. Step 3: Cross multiply
   3,915,378.89x = 5,403,259.71 × 2,196,536.30
4. Step 4: Simplify right side
   3,915,378.89x = 11,868,456,064,326.17
5. Step 5: Solve for x
   x = 11,868,456,064,326.17/3,915,378.89
6. Step 6: Final answer
   x = 3,031,240.76