Finding the Fourth Proportional to 11,996.05, 17,986.37 and 4,980.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,996.05 : 17,986.37 = 4,980.91 : x
2. Step 2: Convert to fraction form
   11,996.05/17,986.37 = 4,980.91/x
3. Step 3: Cross multiply
   11,996.05x = 17,986.37 × 4,980.91
4. Step 4: Simplify right side
   11,996.05x = 89,588,482.07
5. Step 5: Solve for x
   x = 89,588,482.07/11,996.05
6. Step 6: Final answer
   x = 7,468.16