Finding the Fourth Proportional to 8,223,830.78, 12,285,765.59 and 5,321,553.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,223,830.78 : 12,285,765.59 = 5,321,553.93 : x
2. Step 2: Convert to fraction form
   8,223,830.78/12,285,765.59 = 5,321,553.93/x
3. Step 3: Cross multiply
   8,223,830.78x = 12,285,765.59 × 5,321,553.93
4. Step 4: Simplify right side
   8,223,830.78x = 65,379,364,131,915.50
5. Step 5: Solve for x
   x = 65,379,364,131,915.50/8,223,830.78
6. Step 6: Final answer
   x = 7,949,988.99