Finding the Fourth Proportional to 12,933.91, 17,848.28 and 7,906.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,933.91 : 17,848.28 = 7,906.55 : x
2. Step 2: Convert to fraction form
   12,933.91/17,848.28 = 7,906.55/x
3. Step 3: Cross multiply
   12,933.91x = 17,848.28 × 7,906.55
4. Step 4: Simplify right side
   12,933.91x = 141,118,248.76
5. Step 5: Solve for x
   x = 141,118,248.76/12,933.91
6. Step 6: Final answer
   x = 10,910.72