Finding the Fourth Proportional to 13,808.34, 19,055.61 and 7,520.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,808.34 : 19,055.61 = 7,520.76 : x
2. Step 2: Convert to fraction form
   13,808.34/19,055.61 = 7,520.76/x
3. Step 3: Cross multiply
   13,808.34x = 19,055.61 × 7,520.76
4. Step 4: Simplify right side
   13,808.34x = 143,312,669.46
5. Step 5: Solve for x
   x = 143,312,669.46/13,808.34
6. Step 6: Final answer
   x = 10,378.70