Finding the Fourth Proportional to 11,700.13, 16,141.59 and 7,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,700.13 : 16,141.59 = 7,216.10 : x
2. Step 2: Convert to fraction form
   11,700.13/16,141.59 = 7,216.10/x
3. Step 3: Cross multiply
   11,700.13x = 16,141.59 × 7,216.10
4. Step 4: Simplify right side
   11,700.13x = 116,479,327.60
5. Step 5: Solve for x
   x = 116,479,327.60/11,700.13
6. Step 6: Final answer
   x = 9,955.39