Finding the Fourth Proportional to 9,295,665.10, 12,828,328.98 and 5,165,870.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,295,665.10 : 12,828,328.98 = 5,165,870.31 : x
2. Step 2: Convert to fraction form
   9,295,665.10/12,828,328.98 = 5,165,870.31/x
3. Step 3: Cross multiply
   9,295,665.10x = 12,828,328.98 × 5,165,870.31
4. Step 4: Simplify right side
   9,295,665.10x = 66,269,483,804,694.58
5. Step 5: Solve for x
   x = 66,269,483,804,694.58/9,295,665.10
6. Step 6: Final answer
   x = 7,129,073.94