Finding the Fourth Proportional to 13,354.02, 18,428.88 and 7,385.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,354.02 : 18,428.88 = 7,385.76 : x
2. Step 2: Convert to fraction form
   13,354.02/18,428.88 = 7,385.76/x
3. Step 3: Cross multiply
   13,354.02x = 18,428.88 × 7,385.76
4. Step 4: Simplify right side
   13,354.02x = 136,111,284.75
5. Step 5: Solve for x
   x = 136,111,284.75/13,354.02
6. Step 6: Final answer
   x = 10,192.53