Finding the Fourth Proportional to 9,521,613.71, 13,139,829.50 and 5,170,698.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,521,613.71 : 13,139,829.50 = 5,170,698.86 : x
2. Step 2: Convert to fraction form
   9,521,613.71/13,139,829.50 = 5,170,698.86/x
3. Step 3: Cross multiply
   9,521,613.71x = 13,139,829.50 × 5,170,698.86
4. Step 4: Simplify right side
   9,521,613.71x = 67,942,101,423,240.45
5. Step 5: Solve for x
   x = 67,942,101,423,240.45/9,521,613.71
6. Step 6: Final answer
   x = 7,135,565.83