Finding the Fourth Proportional to 13,987.89, 19,302.89 and 7,700.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,987.89 : 19,302.89 = 7,700.27 : x
2. Step 2: Convert to fraction form
   13,987.89/19,302.89 = 7,700.27/x
3. Step 3: Cross multiply
   13,987.89x = 19,302.89 × 7,700.27
4. Step 4: Simplify right side
   13,987.89x = 148,637,329.76
5. Step 5: Solve for x
   x = 148,637,329.76/13,987.89
6. Step 6: Final answer
   x = 10,626.14