Finding the Fourth Proportional to 9,139,312.25, 12,613,604.55 and 5,786,790.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139,312.25 : 12,613,604.55 = 5,786,790.18 : x
2. Step 2: Convert to fraction form
   9,139,312.25/12,613,604.55 = 5,786,790.18/x
3. Step 3: Cross multiply
   9,139,312.25x = 12,613,604.55 × 5,786,790.18
4. Step 4: Simplify right side
   9,139,312.25x = 72,992,282,928,576.31
5. Step 5: Solve for x
   x = 72,992,282,928,576.31/9,139,312.25
6. Step 6: Final answer
   x = 7,986,627.55