Finding the Fourth Proportional to 5,434,128.12, 7,499,174.70 and 2,986,965.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,434,128.12 : 7,499,174.70 = 2,986,965.72 : x
2. Step 2: Convert to fraction form
   5,434,128.12/7,499,174.70 = 2,986,965.72/x
3. Step 3: Cross multiply
   5,434,128.12x = 7,499,174.70 × 2,986,965.72
4. Step 4: Simplify right side
   5,434,128.12x = 22,399,777,757,191.29
5. Step 5: Solve for x
   x = 22,399,777,757,191.29/5,434,128.12
6. Step 6: Final answer
   x = 4,122,055.51