Finding the Fourth Proportional to 13,510.30, 18,642.80 and 7,843.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,510.30 : 18,642.80 = 7,843.94 : x
2. Step 2: Convert to fraction form
   13,510.30/18,642.80 = 7,843.94/x
3. Step 3: Cross multiply
   13,510.30x = 18,642.80 × 7,843.94
4. Step 4: Simplify right side
   13,510.30x = 146,233,085.07
5. Step 5: Solve for x
   x = 146,233,085.07/13,510.30
6. Step 6: Final answer
   x = 10,823.82