Finding the Fourth Proportional to 11,121.59, 16,684.20 and 5,275.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,121.59 : 16,684.20 = 5,275.01 : x
2. Step 2: Convert to fraction form
   11,121.59/16,684.20 = 5,275.01/x
3. Step 3: Cross multiply
   11,121.59x = 16,684.20 × 5,275.01
4. Step 4: Simplify right side
   11,121.59x = 88,009,238.42
5. Step 5: Solve for x
   x = 88,009,238.42/11,121.59
6. Step 6: Final answer
   x = 7,913.37