Finding the Fourth Proportional to 13,167,032.89, 19,728,981.45 and 7,012,480.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,167,032.89 : 19,728,981.45 = 7,012,480.18 : x
2. Step 2: Convert to fraction form
   13,167,032.89/19,728,981.45 = 7,012,480.18/x
3. Step 3: Cross multiply
   13,167,032.89x = 19,728,981.45 × 7,012,480.18
4. Step 4: Simplify right side
   13,167,032.89x = 138,349,091,316,546.78
5. Step 5: Solve for x
   x = 138,349,091,316,546.78/13,167,032.89
6. Step 6: Final answer
   x = 10,507,233.67