Finding the Fourth Proportional to 11,992.28, 17,989.72 and 4,603

Step by Step Solution

1. Step 1: Write the proportion equation
   11,992.28 : 17,989.72 = 4,603 : x
2. Step 2: Convert to fraction form
   11,992.28/17,989.72 = 4,603/x
3. Step 3: Cross multiply
   11,992.28x = 17,989.72 × 4,603
4. Step 4: Simplify right side
   11,992.28x = 82,806,681.16
5. Step 5: Solve for x
   x = 82,806,681.16/11,992.28
6. Step 6: Final answer
   x = 6,905.00