Finding the Fourth Proportional to 13,323.88, 19,980.78 and 4,557.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,323.88 : 19,980.78 = 4,557.16 : x
2. Step 2: Convert to fraction form
   13,323.88/19,980.78 = 4,557.16/x
3. Step 3: Cross multiply
   13,323.88x = 19,980.78 × 4,557.16
4. Step 4: Simplify right side
   13,323.88x = 91,055,611.38
5. Step 5: Solve for x
   x = 91,055,611.38/13,323.88
6. Step 6: Final answer
   x = 6,834.02