Finding the Fourth Proportional to 42,588.06, 63,891.81 and 13,010.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,588.06 : 63,891.81 = 13,010.10 : x
2. Step 2: Convert to fraction form
   42,588.06/63,891.81 = 13,010.10/x
3. Step 3: Cross multiply
   42,588.06x = 63,891.81 × 13,010.10
4. Step 4: Simplify right side
   42,588.06x = 831,238,837.28
5. Step 5: Solve for x
   x = 831,238,837.28/42,588.06
6. Step 6: Final answer
   x = 19,518.12