Finding the Fourth Proportional to 13,940.10, 19,233.59 and 7,970.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,940.10 : 19,233.59 = 7,970.54 : x
2. Step 2: Convert to fraction form
   13,940.10/19,233.59 = 7,970.54/x
3. Step 3: Cross multiply
   13,940.10x = 19,233.59 × 7,970.54
4. Step 4: Simplify right side
   13,940.10x = 153,301,962.42
5. Step 5: Solve for x
   x = 153,301,962.42/13,940.10
6. Step 6: Final answer
   x = 10,997.19