Finding the Fourth Proportional to 11,290.64, 15,588.69 and 7,048.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,290.64 : 15,588.69 = 7,048.16 : x
2. Step 2: Convert to fraction form
   11,290.64/15,588.69 = 7,048.16/x
3. Step 3: Cross multiply
   11,290.64x = 15,588.69 × 7,048.16
4. Step 4: Simplify right side
   11,290.64x = 109,871,581.31
5. Step 5: Solve for x
   x = 109,871,581.31/11,290.64
6. Step 6: Final answer
   x = 9,731.21