Finding the Fourth Proportional to 5,509,686.72, 8,259,796.32 and 1,914,986.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,509,686.72 : 8,259,796.32 = 1,914,986.88 : x
2. Step 2: Convert to fraction form
   5,509,686.72/8,259,796.32 = 1,914,986.88/x
3. Step 3: Cross multiply
   5,509,686.72x = 8,259,796.32 × 1,914,986.88
4. Step 4: Simplify right side
   5,509,686.72x = 15,817,401,584,272.28
5. Step 5: Solve for x
   x = 15,817,401,584,272.28/5,509,686.72
6. Step 6: Final answer
   x = 2,870,835.02