Finding the Fourth Proportional to 9,888.72, 14,802.12 and 5,492.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,888.72 : 14,802.12 = 5,492.04 : x
2. Step 2: Convert to fraction form
   9,888.72/14,802.12 = 5,492.04/x
3. Step 3: Cross multiply
   9,888.72x = 14,802.12 × 5,492.04
4. Step 4: Simplify right side
   9,888.72x = 81,293,835.12
5. Step 5: Solve for x
   x = 81,293,835.12/9,888.72
6. Step 6: Final answer
   x = 8,220.87