Finding the Fourth Proportional to 11,486.34, 17,223.35 and 5,242.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,486.34 : 17,223.35 = 5,242.98 : x
2. Step 2: Convert to fraction form
   11,486.34/17,223.35 = 5,242.98/x
3. Step 3: Cross multiply
   11,486.34x = 17,223.35 × 5,242.98
4. Step 4: Simplify right side
   11,486.34x = 90,301,653.37
5. Step 5: Solve for x
   x = 90,301,653.37/11,486.34
6. Step 6: Final answer
   x = 7,861.66