Finding the Fourth Proportional to 13,875.72, 19,147.68 and 7,906.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,875.72 : 19,147.68 = 7,906.56 : x
2. Step 2: Convert to fraction form
   13,875.72/19,147.68 = 7,906.56/x
3. Step 3: Cross multiply
   13,875.72x = 19,147.68 × 7,906.56
4. Step 4: Simplify right side
   13,875.72x = 151,392,280.78
5. Step 5: Solve for x
   x = 151,392,280.78/13,875.72
6. Step 6: Final answer
   x = 10,910.59