Finding the Fourth Proportional to 9,905.00, 13,668.98 and 5,429.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,905.00 : 13,668.98 = 5,429.16 : x
2. Step 2: Convert to fraction form
   9,905.00/13,668.98 = 5,429.16/x
3. Step 3: Cross multiply
   9,905.00x = 13,668.98 × 5,429.16
4. Step 4: Simplify right side
   9,905.00x = 74,211,052.31
5. Step 5: Solve for x
   x = 74,211,052.31/9,905.00
6. Step 6: Final answer
   x = 7,492.29