Finding the Fourth Proportional to 11,917.08, 17,870.46 and 5,253.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,917.08 : 17,870.46 = 5,253.42 : x
2. Step 2: Convert to fraction form
   11,917.08/17,870.46 = 5,253.42/x
3. Step 3: Cross multiply
   11,917.08x = 17,870.46 × 5,253.42
4. Step 4: Simplify right side
   11,917.08x = 93,881,031.97
5. Step 5: Solve for x
   x = 93,881,031.97/11,917.08
6. Step 6: Final answer
   x = 7,877.86