Finding the Fourth Proportional to 13,681,105.52, 18,875,341.32 and 7,879,771.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,681,105.52 : 18,875,341.32 = 7,879,771.12 : x
2. Step 2: Convert to fraction form
   13,681,105.52/18,875,341.32 = 7,879,771.12/x
3. Step 3: Cross multiply
   13,681,105.52x = 18,875,341.32 × 7,879,771.12
4. Step 4: Simplify right side
   13,681,105.52x = 148,733,369,413,478.69
5. Step 5: Solve for x
   x = 148,733,369,413,478.69/13,681,105.52
6. Step 6: Final answer
   x = 10,871,443.77