Finding the Fourth Proportional to 13,312.49, 19,971.83 and 4,547.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,312.49 : 19,971.83 = 4,547.41 : x
2. Step 2: Convert to fraction form
   13,312.49/19,971.83 = 4,547.41/x
3. Step 3: Cross multiply
   13,312.49x = 19,971.83 × 4,547.41
4. Step 4: Simplify right side
   13,312.49x = 90,820,060.90
5. Step 5: Solve for x
   x = 90,820,060.90/13,312.49
6. Step 6: Final answer
   x = 6,822.17