Finding the Fourth Proportional to 8,780,196.20, 13,173,158.34 and 3,921,910.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,780,196.20 : 13,173,158.34 = 3,921,910.56 : x
2. Step 2: Convert to fraction form
   8,780,196.20/13,173,158.34 = 3,921,910.56/x
3. Step 3: Cross multiply
   8,780,196.20x = 13,173,158.34 × 3,921,910.56
4. Step 4: Simplify right side
   8,780,196.20x = 51,663,948,802,198.07
5. Step 5: Solve for x
   x = 51,663,948,802,198.07/8,780,196.20
6. Step 6: Final answer
   x = 5,884,145.14