Finding the Fourth Proportional to 13,807.34, 19,054.59 and 7,520.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,807.34 : 19,054.59 = 7,520.30 : x
2. Step 2: Convert to fraction form
   13,807.34/19,054.59 = 7,520.30/x
3. Step 3: Cross multiply
   13,807.34x = 19,054.59 × 7,520.30
4. Step 4: Simplify right side
   13,807.34x = 143,296,233.18
5. Step 5: Solve for x
   x = 143,296,233.18/13,807.34
6. Step 6: Final answer
   x = 10,378.26