Finding the Fourth Proportional to 7,118,321.85, 10,677,980.79 and 2,858,490

Step by Step Solution

1. Step 1: Write the proportion equation
   7,118,321.85 : 10,677,980.79 = 2,858,490 : x
2. Step 2: Convert to fraction form
   7,118,321.85/10,677,980.79 = 2,858,490/x
3. Step 3: Cross multiply
   7,118,321.85x = 10,677,980.79 × 2,858,490
4. Step 4: Simplify right side
   7,118,321.85x = 30,522,901,308,407.10
5. Step 5: Solve for x
   x = 30,522,901,308,407.10/7,118,321.85
6. Step 6: Final answer
   x = 4,287,934.99