Finding the Fourth Proportional to 9,368.31, 14,051.10 and 3,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,368.31 : 14,051.10 = 3,128.31 : x
2. Step 2: Convert to fraction form
   9,368.31/14,051.10 = 3,128.31/x
3. Step 3: Cross multiply
   9,368.31x = 14,051.10 × 3,128.31
4. Step 4: Simplify right side
   9,368.31x = 43,956,196.64
5. Step 5: Solve for x
   x = 43,956,196.64/9,368.31
6. Step 6: Final answer
   x = 4,692.01