Finding the Fourth Proportional to 13,771.89, 19,005.30 and 7,484.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,771.89 : 19,005.30 = 7,484.40 : x
2. Step 2: Convert to fraction form
   13,771.89/19,005.30 = 7,484.40/x
3. Step 3: Cross multiply
   13,771.89x = 19,005.30 × 7,484.40
4. Step 4: Simplify right side
   13,771.89x = 142,243,267.32
5. Step 5: Solve for x
   x = 142,243,267.32/13,771.89
6. Step 6: Final answer
   x = 10,328.52