Finding the Fourth Proportional to 10,368.34, 15,554.20 and 4,128.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,368.34 : 15,554.20 = 4,128.34 : x
2. Step 2: Convert to fraction form
   10,368.34/15,554.20 = 4,128.34/x
3. Step 3: Cross multiply
   10,368.34x = 15,554.20 × 4,128.34
4. Step 4: Simplify right side
   10,368.34x = 64,213,026.03
5. Step 5: Solve for x
   x = 64,213,026.03/10,368.34
6. Step 6: Final answer
   x = 6,193.18