Finding the Fourth Proportional to 14,368.89, 21,553.69 and 3,980.73

Step by Step Solution

1. Step 1: Write the proportion equation
   14,368.89 : 21,553.69 = 3,980.73 : x
2. Step 2: Convert to fraction form
   14,368.89/21,553.69 = 3,980.73/x
3. Step 3: Cross multiply
   14,368.89x = 21,553.69 × 3,980.73
4. Step 4: Simplify right side
   14,368.89x = 85,799,312.63
5. Step 5: Solve for x
   x = 85,799,312.63/14,368.89
6. Step 6: Final answer
   x = 5,971.19