Finding the Fourth Proportional to 13,426,587.69, 18,530,913.15 and 7,921,308.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426,587.69 : 18,530,913.15 = 7,921,308.48 : x
2. Step 2: Convert to fraction form
   13,426,587.69/18,530,913.15 = 7,921,308.48/x
3. Step 3: Cross multiply
   13,426,587.69x = 18,530,913.15 × 7,921,308.48
4. Step 4: Simplify right side
   13,426,587.69x = 146,789,079,477,238.50
5. Step 5: Solve for x
   x = 146,789,079,477,238.50/13,426,587.69
6. Step 6: Final answer
   x = 10,932,716.70