Finding the Fourth Proportional to 13,813.47, 19,061.91 and 7,844.36

Step by Step Solution

1. Step 1: Write the proportion equation
   13,813.47 : 19,061.91 = 7,844.36 : x
2. Step 2: Convert to fraction form
   13,813.47/19,061.91 = 7,844.36/x
3. Step 3: Cross multiply
   13,813.47x = 19,061.91 × 7,844.36
4. Step 4: Simplify right side
   13,813.47x = 149,528,389.02
5. Step 5: Solve for x
   x = 149,528,389.02/13,813.47
6. Step 6: Final answer
   x = 10,824.82