Finding the Fourth Proportional to 9,819.63, 14,719.88 and 5,427.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.63 : 14,719.88 = 5,427.86 : x
2. Step 2: Convert to fraction form
   9,819.63/14,719.88 = 5,427.86/x
3. Step 3: Cross multiply
   9,819.63x = 14,719.88 × 5,427.86
4. Step 4: Simplify right side
   9,819.63x = 79,897,440.09
5. Step 5: Solve for x
   x = 79,897,440.09/9,819.63
6. Step 6: Final answer
   x = 8,136.50