Finding the Fourth Proportional to 9,869.96, 14,807.69 and 5,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,869.96 : 14,807.69 = 5,490.50 : x
2. Step 2: Convert to fraction form
   9,869.96/14,807.69 = 5,490.50/x
3. Step 3: Cross multiply
   9,869.96x = 14,807.69 × 5,490.50
4. Step 4: Simplify right side
   9,869.96x = 81,301,561.63
5. Step 5: Solve for x
   x = 81,301,561.63/9,869.96
6. Step 6: Final answer
   x = 8,237.27