Finding the Fourth Proportional to 9,639,651.48, 13,302,854.76 and 5,288,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,639,651.48 : 13,302,854.76 = 5,288,658.72 : x
2. Step 2: Convert to fraction form
   9,639,651.48/13,302,854.76 = 5,288,658.72/x
3. Step 3: Cross multiply
   9,639,651.48x = 13,302,854.76 × 5,288,658.72
4. Step 4: Simplify right side
   9,639,651.48x = 70,354,258,827,367.50
5. Step 5: Solve for x
   x = 70,354,258,827,367.50/9,639,651.48
6. Step 6: Final answer
   x = 7,298,423.49