Finding the Fourth Proportional to 13,988.78, 19,304.52 and 7,701.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,988.78 : 19,304.52 = 7,701.15 : x
2. Step 2: Convert to fraction form
   13,988.78/19,304.52 = 7,701.15/x
3. Step 3: Cross multiply
   13,988.78x = 19,304.52 × 7,701.15
4. Step 4: Simplify right side
   13,988.78x = 148,667,047.71
5. Step 5: Solve for x
   x = 148,667,047.71/13,988.78
6. Step 6: Final answer
   x = 10,627.59