Finding the Fourth Proportional to 11,555.62, 17,322.50 and 7,116.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,555.62 : 17,322.50 = 7,116.01 : x
2. Step 2: Convert to fraction form
   11,555.62/17,322.50 = 7,116.01/x
3. Step 3: Cross multiply
   11,555.62x = 17,322.50 × 7,116.01
4. Step 4: Simplify right side
   11,555.62x = 123,267,047.64
5. Step 5: Solve for x
   x = 123,267,047.64/11,555.62
6. Step 6: Final answer
   x = 10,667.28