Finding the Fourth Proportional to 9,819.81, 13,551.63 and 5,343.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.81 : 13,551.63 = 5,343.86 : x
2. Step 2: Convert to fraction form
   9,819.81/13,551.63 = 5,343.86/x
3. Step 3: Cross multiply
   9,819.81x = 13,551.63 × 5,343.86
4. Step 4: Simplify right side
   9,819.81x = 72,417,945.73
5. Step 5: Solve for x
   x = 72,417,945.73/9,819.81
6. Step 6: Final answer
   x = 7,374.68