Finding the Fourth Proportional to 12,922.96, 17,835.78 and 7,888

Step by Step Solution

1. Step 1: Write the proportion equation
   12,922.96 : 17,835.78 = 7,888 : x
2. Step 2: Convert to fraction form
   12,922.96/17,835.78 = 7,888/x
3. Step 3: Cross multiply
   12,922.96x = 17,835.78 × 7,888
4. Step 4: Simplify right side
   12,922.96x = 140,688,632.64
5. Step 5: Solve for x
   x = 140,688,632.64/12,922.96
6. Step 6: Final answer
   x = 10,886.72