Finding the Fourth Proportional to 11,698.86, 16,139.84 and 7,214.83

Step by Step Solution

1. Step 1: Write the proportion equation
   11,698.86 : 16,139.84 = 7,214.83 : x
2. Step 2: Convert to fraction form
   11,698.86/16,139.84 = 7,214.83/x
3. Step 3: Cross multiply
   11,698.86x = 16,139.84 × 7,214.83
4. Step 4: Simplify right side
   11,698.86x = 116,446,201.83
5. Step 5: Solve for x
   x = 116,446,201.83/11,698.86
6. Step 6: Final answer
   x = 9,953.64