Finding the Fourth Proportional to 13,322.96, 19,987.98 and 4,557.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.96 : 19,987.98 = 4,557.86 : x
2. Step 2: Convert to fraction form
   13,322.96/19,987.98 = 4,557.86/x
3. Step 3: Cross multiply
   13,322.96x = 19,987.98 × 4,557.86
4. Step 4: Simplify right side
   13,322.96x = 91,102,414.52
5. Step 5: Solve for x
   x = 91,102,414.52/13,322.96
6. Step 6: Final answer
   x = 6,838.00