Finding the Fourth Proportional to 9,639,653.48, 13,302,857.52 and 5,288,660.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639,653.48 : 13,302,857.52 = 5,288,660.72 : x
2. Step 2: Convert to fraction form
   9,639,653.48/13,302,857.52 = 5,288,660.72/x
3. Step 3: Cross multiply
   9,639,653.48x = 13,302,857.52 × 5,288,660.72
4. Step 4: Simplify right side
   9,639,653.48x = 70,354,300,029,780.61
5. Step 5: Solve for x
   x = 70,354,300,029,780.61/9,639,653.48
6. Step 6: Final answer
   x = 7,298,426.25