Finding the Fourth Proportional to 17,791.50, 26,691.04 and 5,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,791.50 : 26,691.04 = 5,312.50 : x
2. Step 2: Convert to fraction form
   17,791.50/26,691.04 = 5,312.50/x
3. Step 3: Cross multiply
   17,791.50x = 26,691.04 × 5,312.50
4. Step 4: Simplify right side
   17,791.50x = 141,796,150
5. Step 5: Solve for x
   x = 141,796,150/17,791.50
6. Step 6: Final answer
   x = 7,969.88