Finding the Fourth Proportional to 14,071.50, 19,418.67 and 7,784.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,071.50 : 19,418.67 = 7,784.28 : x
2. Step 2: Convert to fraction form
   14,071.50/19,418.67 = 7,784.28/x
3. Step 3: Cross multiply
   14,071.50x = 19,418.67 × 7,784.28
4. Step 4: Simplify right side
   14,071.50x = 151,160,364.51
5. Step 5: Solve for x
   x = 151,160,364.51/14,071.50
6. Step 6: Final answer
   x = 10,742.31