Finding the Fourth Proportional to 5,387,128.86, 7,434,395.85 and 2,939,897.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,387,128.86 : 7,434,395.85 = 2,939,897.94 : x
2. Step 2: Convert to fraction form
   5,387,128.86/7,434,395.85 = 2,939,897.94/x
3. Step 3: Cross multiply
   5,387,128.86x = 7,434,395.85 × 2,939,897.94
4. Step 4: Simplify right side
   5,387,128.86x = 21,856,365,044,559.55
5. Step 5: Solve for x
   x = 21,856,365,044,559.55/5,387,128.86
6. Step 6: Final answer
   x = 4,057,145.39