Finding the Fourth Proportional to 13,886.32, 19,162.76 and 7,917.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,886.32 : 19,162.76 = 7,917.86 : x
2. Step 2: Convert to fraction form
   13,886.32/19,162.76 = 7,917.86/x
3. Step 3: Cross multiply
   13,886.32x = 19,162.76 × 7,917.86
4. Step 4: Simplify right side
   13,886.32x = 151,728,050.89
5. Step 5: Solve for x
   x = 151,728,050.89/13,886.32
6. Step 6: Final answer
   x = 10,926.44