Finding the Fourth Proportional to 14,069.35, 19,412.89 and 7,780.51

Step by Step Solution

1. Step 1: Write the proportion equation
   14,069.35 : 19,412.89 = 7,780.51 : x
2. Step 2: Convert to fraction form
   14,069.35/19,412.89 = 7,780.51/x
3. Step 3: Cross multiply
   14,069.35x = 19,412.89 × 7,780.51
4. Step 4: Simplify right side
   14,069.35x = 151,042,184.77
5. Step 5: Solve for x
   x = 151,042,184.77/14,069.35
6. Step 6: Final answer
   x = 10,735.55