Finding the Fourth Proportional to 17,320.80, 25,981.98 and 5,312.07

Step by Step Solution

1. Step 1: Write the proportion equation
   17,320.80 : 25,981.98 = 5,312.07 : x
2. Step 2: Convert to fraction form
   17,320.80/25,981.98 = 5,312.07/x
3. Step 3: Cross multiply
   17,320.80x = 25,981.98 × 5,312.07
4. Step 4: Simplify right side
   17,320.80x = 138,018,096.50
5. Step 5: Solve for x
   x = 138,018,096.50/17,320.80
6. Step 6: Final answer
   x = 7,968.34