Finding the Fourth Proportional to 10,202,140.56, 15,305,339.52 and 5,408,528.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,202,140.56 : 15,305,339.52 = 5,408,528.16 : x
2. Step 2: Convert to fraction form
   10,202,140.56/15,305,339.52 = 5,408,528.16/x
3. Step 3: Cross multiply
   10,202,140.56x = 15,305,339.52 × 5,408,528.16
4. Step 4: Simplify right side
   10,202,140.56x = 82,779,359,792,280.89
5. Step 5: Solve for x
   x = 82,779,359,792,280.89/10,202,140.56
6. Step 6: Final answer
   x = 8,113,920.73