Finding the Fourth Proportional to 13,787.53, 19,026.81 and 7,499.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,787.53 : 19,026.81 = 7,499.91 : x
2. Step 2: Convert to fraction form
   13,787.53/19,026.81 = 7,499.91/x
3. Step 3: Cross multiply
   13,787.53x = 19,026.81 × 7,499.91
4. Step 4: Simplify right side
   13,787.53x = 142,699,362.59
5. Step 5: Solve for x
   x = 142,699,362.59/13,787.53
6. Step 6: Final answer
   x = 10,349.89