Finding the Fourth Proportional to 13,900.02, 19,181.88 and 7,526.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,900.02 : 19,181.88 = 7,526.50 : x
2. Step 2: Convert to fraction form
   13,900.02/19,181.88 = 7,526.50/x
3. Step 3: Cross multiply
   13,900.02x = 19,181.88 × 7,526.50
4. Step 4: Simplify right side
   13,900.02x = 144,372,371.87
5. Step 5: Solve for x
   x = 144,372,371.87/13,900.02
6. Step 6: Final answer
   x = 10,386.49