Finding the Fourth Proportional to 13,830.72, 19,071.27 and 9,346.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,830.72 : 19,071.27 = 9,346.69 : x
2. Step 2: Convert to fraction form
   13,830.72/19,071.27 = 9,346.69/x
3. Step 3: Cross multiply
   13,830.72x = 19,071.27 × 9,346.69
4. Step 4: Simplify right side
   13,830.72x = 178,253,248.60
5. Step 5: Solve for x
   x = 178,253,248.60/13,830.72
6. Step 6: Final answer
   x = 12,888.21