Finding the Fourth Proportional to 10,970.83, 15,134.61 and 7,621.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,970.83 : 15,134.61 = 7,621.48 : x
2. Step 2: Convert to fraction form
   10,970.83/15,134.61 = 7,621.48/x
3. Step 3: Cross multiply
   10,970.83x = 15,134.61 × 7,621.48
4. Step 4: Simplify right side
   10,970.83x = 115,348,127.42
5. Step 5: Solve for x
   x = 115,348,127.42/10,970.83
6. Step 6: Final answer
   x = 10,514.07