Finding the Fourth Proportional to 13,987.69, 19,303.01 and 7,700.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,987.69 : 19,303.01 = 7,700.06 : x
2. Step 2: Convert to fraction form
   13,987.69/19,303.01 = 7,700.06/x
3. Step 3: Cross multiply
   13,987.69x = 19,303.01 × 7,700.06
4. Step 4: Simplify right side
   13,987.69x = 148,634,373.81
5. Step 5: Solve for x
   x = 148,634,373.81/13,987.69
6. Step 6: Final answer
   x = 10,626.09