Finding the Fourth Proportional to 8,201,978.80, 12,302,968.20 and 3,419,009.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,201,978.80 : 12,302,968.20 = 3,419,009.80 : x
2. Step 2: Convert to fraction form
   8,201,978.80/12,302,968.20 = 3,419,009.80/x
3. Step 3: Cross multiply
   8,201,978.80x = 12,302,968.20 × 3,419,009.80
4. Step 4: Simplify right side
   8,201,978.80x = 42,063,968,844,888.35
5. Step 5: Solve for x
   x = 42,063,968,844,888.35/8,201,978.80
6. Step 6: Final answer
   x = 5,128,514.70