Finding the Fourth Proportional to 12,959.48, 17,892.69 and 9,970.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.48 : 17,892.69 = 9,970.04 : x
2. Step 2: Convert to fraction form
   12,959.48/17,892.69 = 9,970.04/x
3. Step 3: Cross multiply
   12,959.48x = 17,892.69 × 9,970.04
4. Step 4: Simplify right side
   12,959.48x = 178,390,835.01
5. Step 5: Solve for x
   x = 178,390,835.01/12,959.48
6. Step 6: Final answer
   x = 13,765.28