Finding the Fourth Proportional to 13,288.29, 19,935.86 and 3,927.93

Step by Step Solution

1. Step 1: Write the proportion equation
   13,288.29 : 19,935.86 = 3,927.93 : x
2. Step 2: Convert to fraction form
   13,288.29/19,935.86 = 3,927.93/x
3. Step 3: Cross multiply
   13,288.29x = 19,935.86 × 3,927.93
4. Step 4: Simplify right side
   13,288.29x = 78,306,642.93
5. Step 5: Solve for x
   x = 78,306,642.93/13,288.29
6. Step 6: Final answer
   x = 5,892.91