Finding the Fourth Proportional to 9,631,128.46, 13,290,604.56 and 5,280,119.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,631,128.46 : 13,290,604.56 = 5,280,119.28 : x
2. Step 2: Convert to fraction form
   9,631,128.46/13,290,604.56 = 5,280,119.28/x
3. Step 3: Cross multiply
   9,631,128.46x = 13,290,604.56 × 5,280,119.28
4. Step 4: Simplify right side
   9,631,128.46x = 70,175,977,380,111.92
5. Step 5: Solve for x
   x = 70,175,977,380,111.92/9,631,128.46
6. Step 6: Final answer
   x = 7,286,371.24