Finding the Fourth Proportional to 13,807.55, 19,055.45 and 7,758.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,807.55 : 19,055.45 = 7,758.49 : x
2. Step 2: Convert to fraction form
   13,807.55/19,055.45 = 7,758.49/x
3. Step 3: Cross multiply
   13,807.55x = 19,055.45 × 7,758.49
4. Step 4: Simplify right side
   13,807.55x = 147,841,518.27
5. Step 5: Solve for x
   x = 147,841,518.27/13,807.55
6. Step 6: Final answer
   x = 10,707.30