Finding the Fourth Proportional to 9,262,350.72, 12,782,043.84 and 5,640,678.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,262,350.72 : 12,782,043.84 = 5,640,678.72 : x
2. Step 2: Convert to fraction form
   9,262,350.72/12,782,043.84 = 5,640,678.72/x
3. Step 3: Cross multiply
   9,262,350.72x = 12,782,043.84 × 5,640,678.72
4. Step 4: Simplify right side
   9,262,350.72x = 72,099,402,686,395.08
5. Step 5: Solve for x
   x = 72,099,402,686,395.08/9,262,350.72
6. Step 6: Final answer
   x = 7,784,136.54